{"source":"polymarket","id":"912565","ticker":"wta-hibino-siskova-2026-08-26","slug":"wta-hibino-siskova-2026-08-26","title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\n\nThis market will resolve to 'Nao Hibino' if Nao Hibino advances against Anna Siskova.\n\nThis market will resolve to 'Anna Siskova' if Anna Siskova advances against Nao Hibino.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50.\n\nIf the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.\n\nIf the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.\n\nThe primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","active":true,"closed":false,"start_date":"2026-08-25T22:14:17Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":2708.890307000001,"volume_24hr":2708.8903070000006,"volume_24h_change":null,"normalized_vol_24hr":24.5512638092041,"normalized_volume":14.212451934814453,"liquidity":171374.5127,"open_interest":2706.4603070000003,"categories":["Sports"],"tags":[{"id":"864","slug":"tennis","label":"Tennis"},{"id":"1","slug":"sports","label":"Sports"},{"id":"100639","slug":"games","label":"Games"}],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Match O/U 22.5","top_outcome_probability":0.695,"top_outcome_prob_24h_change":0.19499999999999995,"top_outcome_volume_24h_change":0.0,"updated_at":"2026-08-26T18:47:41.264691Z","fetched_at":"2026-08-26T18:47:41.264691Z","added_at":"2026-08-25T22:30:12.462119Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26","chart_24h":[0.0,0.0,459.84318,459.84318,459.84318,459.84318,459.84318,459.84318,459.84318,459.84318,511.668274,578.282735,669.937019,673.508446,1681.616878,1687.992174,2701.280307,2701.280307,2701.280307,2701.280307],"markets":[{"source":"polymarket","id":"3888172","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26","question":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","group_item_title":null,"description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\n\nThis market will resolve to 'Nao Hibino' if Nao Hibino advances against Anna Siskova.\n\nThis market will resolve to 'Anna Siskova' if Anna Siskova advances against Nao Hibino.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50.\n\nIf the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.\n\nIf the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.\n\nThe primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Nao Hibino","Anna Siskova"],"outcome_prices":[0.415,0.585],"probability":0.415,"spread":0.01,"active":true,"closed":false,"start_date":"2026-08-25T22:14:18Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":2704.942940000001,"volume_24hr":2704.9429400000004,"prob_24h_change":-0.08500000000000002,"volume_24h_change":2704.94294,"normalized_vol_24hr":27.8609619140625,"normalized_volume":18.325454711914062,"liquidity":141133.9796,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:47:41.344655Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:30:12.879067Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.495,0.48,0.485,0.48,0.445,0.445,0.445,0.425,0.415,0.415,0.415,0.415,0.415]},{"source":"polymarket","id":"3888599","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-set-totals-2pt5","question":"Nao Hibino vs. Anna Siskova: Total Sets O/U 2.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Total Sets: O/U 2.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nIf the match is played to completion, this market will resolve to \"Over\" if the total number of sets played equals or exceeds 3, and to \"Under\" otherwise. A set counts as played once it has begun, even if it is not played to completion. A super tie breaker is considered as one (1) set.\nIf the match is postponed or suspended, this market will remain open until the match has been completed. A postponement alone will not trigger a 50-50 resolution.\nIf a player retires, withdraws, is defaulted, or is disqualified, or the match otherwise begins but is not completed, this market will resolve based on any outcome that was already unequivocally determined at the time play stopped. An outcome is considered determined if it would have been guaranteed had the match been played to completion using the minimum number of additional sets required. For example, for a line of 2.5, if play stops with the players at one set each, completing the match would have required at least one additional set, resulting in at least 3 sets played, so \"Over\" would resolve as the winning outcome. If neither outcome was already determined at the time play stopped, this market will resolve 50-50.\nIf the match is canceled, or has not been completed by September 9, 2026, 11:59 PM ET, this market will resolve 50-50, unless an outcome was already unequivocally determined as described above.\nThe primary resolution source for this market will be official Grand Slam statistics; however, a consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over 2.5","Under 2.5"],"outcome_prices":[0.35,0.65],"probability":0.35,"spread":0.02,"active":true,"closed":false,"start_date":"2026-08-25T22:44:16Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":3.947367,"volume_24hr":3.947367,"prob_24h_change":-0.15000000000000002,"volume_24h_change":3.947367,"normalized_vol_24hr":1.140270709991455,"normalized_volume":0.750009298324585,"liquidity":4999.9174,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:48:41.835048Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-set-totals-2pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5,0.5,0.5,0.5,0.5,0.375,0.37,0.355,0.355]},{"source":"polymarket","id":"3888637","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-match-total-22pt5","question":"Hibino vs. Siskova: Match O/U 22.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Match O/U 22.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed equals or exceeds 23. Otherwise, it will resolve to \"Under.\" All tiebreaks, including any Champions/Super tiebreak, count as one (1) game.\nIf the match is postponed or suspended, this market will remain open until the match has been completed. A postponement alone will not trigger a 50-50 resolution.\nIf the match is permanently abandoned before completion, or if the match has not been completed by September 9, 2026, 11:59 PM ET, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play.\nThe primary resolution source for this market will be official Grand Slam statistics; however, a consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.695,0.305],"probability":0.695,"spread":0.59,"active":true,"closed":false,"start_date":"2026-08-25T22:44:17Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.19499999999999995,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":169.032,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:48:41.835048Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-match-total-22pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5,0.5,0.44,0.435,0.44,0.435,0.44,0.45]},{"source":"polymarket","id":"3888608","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-first-set-total-8pt5","question":"Hibino vs. Siskova: Set 1 Games O/U 8.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 1 O/U 8.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed in the first set equals or exceeds 9. Otherwise, it will resolve to \"Under.\" Any first-set tiebreak counts as one (1) game.\nIf the match is postponed or suspended, this market will remain open until the first set has been completed. A postponement alone will not trigger a 50-50 resolution.\nIf the match is permanently abandoned before the first set is completed, or if the first set has not been completed by September 9, 2026, 11:59 PM ET, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play.\nThe primary resolution source for this market will be official Grand Slam statistics; however, a consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.685,0.315],"probability":0.685,"spread":0.07,"active":true,"closed":false,"start_date":"2026-08-25T22:44:16Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.19000000000000006,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":428.1694,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:48:41.835048Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-first-set-total-8pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.495,0.495,0.505,0.665,0.665,0.655,0.685,0.61]},{"source":"polymarket","id":"3888173","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-completed-match","question":"US Open, Qualification WTA: Completed Match: Nao Hibino vs Anna Siskova","group_item_title":"Completed Match","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET. This market will resolve to \"Yes\" if all games and sets required to determine a match winner under governing body or event organizer rules are played to completion through normal play. Otherwise, if the match is not completed for any reason, it will resolve to \"No.\" If a forfeit of any kind occurs, including but not limited to a walkover or retirement, this market will resolve \"No.\" If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to \"No.\" The primary resolution source for this market is the official statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 2 hours after the event's conclusion, a consensus of credible reporting may be used instead.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Yes","No"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.98,"active":true,"closed":false,"start_date":"2026-08-25T22:14:17Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.1,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T22:56:53.755670Z","fetched_at":"2026-08-25T22:30:12.879067Z","added_at":"2026-08-25T22:30:12.879067Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-completed-match","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5]},{"source":"polymarket","id":"3888600","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-set-2-total-8pt5","question":"Hibino vs. Siskova: Set 2 Games O/U 8.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 2 O/U 8.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed in set 2 equals or exceeds 9. Otherwise, it will resolve to \"Under.\"\nAny tiebreak in set 2 counts as one (1) game toward the total.\nIf set 2 is not completed for any reason (including the match ending before set 2 is reached), this market will resolve 50-50. If the match is canceled before play begins, or play has not begun by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will also resolve 50-50.\nResolution will be based on official Grand Slam results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.98,"active":true,"closed":false,"start_date":"2026-08-25T22:44:18Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0050000000000000044,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.26,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T08:29:20.348728Z","fetched_at":"2026-08-26T08:28:35.752295Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-set-2-total-8pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.495,0.495,0.5]},{"source":"polymarket","id":"3888634","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-first-set-total-9pt5","question":"Hibino vs. Siskova: Set 1 Games O/U 9.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 1 O/U 9.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed in the first set equals or exceeds 10. Otherwise, it will resolve to \"Under.\" Any first-set tiebreak counts as one (1) game.\nIf the match is postponed or suspended, this market will remain open until the first set has been completed. A postponement alone will not trigger a 50-50 resolution.\nIf the match is permanently abandoned before the first set is completed, or if the first set has not been completed by September 9, 2026, 11:59 PM ET, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play.\nThe primary resolution source for this market will be official Grand Slam statistics; however, a consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.98,"active":true,"closed":false,"start_date":"2026-08-25T22:44:17Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0050000000000000044,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.1,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:48:41.835048Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-first-set-total-9pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.495,0.495,0.465,0.47,0.47,0.465,0.465,0.465,0.47,0.46]},{"source":"polymarket","id":"3888639","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-set-2-total-9pt5","question":"Hibino vs. Siskova: Set 2 Games O/U 9.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 2 O/U 9.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed in set 2 equals or exceeds 10. Otherwise, it will resolve to \"Under.\"\nAny tiebreak in set 2 counts as one (1) game toward the total.\nIf set 2 is not completed for any reason (including the match ending before set 2 is reached), this market will resolve 50-50. If the match is canceled before play begins, or play has not begun by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will also resolve 50-50.\nResolution will be based on official Grand Slam results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.98,"active":true,"closed":false,"start_date":"2026-08-25T22:44:16Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0050000000000000044,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.26,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T08:29:20.348728Z","fetched_at":"2026-08-26T08:28:35.752295Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-set-2-total-9pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.495,0.495,0.5]},{"source":"polymarket","id":"3888652","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-match-total-23pt5","question":"Hibino vs. Siskova: Match O/U 23.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Match O/U 23.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed equals or exceeds 24. Otherwise, it will resolve to \"Under.\" All tiebreaks, including any Champions/Super tiebreak, count as one (1) game.\nIf the match is postponed or suspended, this market will remain open until the match has been completed. A postponement alone will not trigger a 50-50 resolution.\nIf the match is permanently abandoned before completion, or if the match has not been completed by September 9, 2026, 11:59 PM ET, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play.\nThe primary resolution source for this market will be official Grand Slam statistics; however, a consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.98,"active":true,"closed":false,"start_date":"2026-08-25T22:44:20Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.26,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:48:41.835048Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-match-total-23pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5,0.5,0.495,0.45,0.44,0.415,0.405,0.26,0.25,0.255,0.255]},{"source":"polymarket","id":"3888655","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-set-2-total-10pt5","question":"Hibino vs. Siskova: Set 2 Games O/U 10.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 2 O/U 10.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed in set 2 equals or exceeds 11. Otherwise, it will resolve to \"Under.\"\nAny tiebreak in set 2 counts as one (1) game toward the total.\nIf set 2 is not completed for any reason (including the match ending before set 2 is reached), this market will resolve 50-50. If the match is canceled before play begins, or play has not begun by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will also resolve 50-50.\nResolution will be based on official Grand Slam results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.98,"active":true,"closed":false,"start_date":"2026-08-25T22:44:20Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0050000000000000044,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.26,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T08:29:20.348728Z","fetched_at":"2026-08-26T08:28:35.752295Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-set-2-total-10pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.495,0.495,0.5]},{"source":"polymarket","id":"3898326","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-game-handicap-away-1pt5","question":"Game Spread: Siskova (-1.5) vs Hibino (+1.5)","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Game Spread +/-1.5","description":"This market will resolve to \"Siskova\" if Anna Siskova wins 1.5 or more total games than Nao Hibino in the upcoming tennis match, scheduled for August 26, 2026 at 2:00PM ET. Otherwise, this market will resolve to \"Hibino\".\nGames won will be counted across all sets played in the match. A set decided by a tiebreak will count as one game for the winner of that tiebreak, and a match tiebreak played in place of a final set will also count as one game for its winner.\nIf the match is canceled (not played at all), or is delayed beyond 14 days from the scheduled date without completion at 11:59 PM ET, this market will resolve 50-50.\nIf the match begins but is not completed due to retirement, default, or disqualification, this market will resolve 50-50, unless the outcome of this market has already been unconditionally determined by the completed portion of play. For example, if the match ends at a point where Anna Siskova could no longer have finished 1.5 or more games ahead even by winning every remaining game, this market will resolve to \"Hibino\".\nIf the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.\nThe primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Siskova","Hibino"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":true,"closed":false,"start_date":"2026-08-26T05:44:40Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T06:24:42.888534Z","fetched_at":"2026-08-26T06:01:51.086733Z","added_at":"2026-08-26T06:01:51.086733Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-game-handicap-away-1pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5]},{"source":"polymarket","id":"3888594","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-match-total-21pt5","question":"Hibino vs. Siskova: Match O/U 21.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Match O/U 21.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed equals or exceeds 22. Otherwise, it will resolve to \"Under.\" All tiebreaks, including any Champions/Super tiebreak, count as one (1) game.\nIf the match is postponed or suspended, this market will remain open until the match has been completed. A postponement alone will not trigger a 50-50 resolution.\nIf the match is permanently abandoned before completion, or if the match has not been completed by September 9, 2026, 11:59 PM ET, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play.\nThe primary resolution source for this market will be official Grand Slam statistics; however, a consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.455,0.545],"probability":0.455,"spread":0.01,"active":true,"closed":false,"start_date":"2026-08-25T22:44:16Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.044999999999999984,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":5399.5301,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:48:41.835048Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-match-total-21pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5,0.49,0.475,0.465,0.475,0.465]},{"source":"polymarket","id":"3888586","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-first-set-winner-Hibino-vs-Siskova","question":"Set 1 Winner: Hibino vs Siskova","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 1 Winner","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to “Hibino” if Nao Hibino wins the first set. It will resolve to “Siskova” if Anna Siskova wins the first set.\nIf the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50.\nIf the match is canceled (not played at all) or play has not begun by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50.\nResolution will be based on official Grand Slam match statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Hibino","Siskova"],"outcome_prices":[0.445,0.555],"probability":0.445,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-25T22:44:15Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.05499999999999999,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":16510.8408,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T15:55:33.810651Z","fetched_at":"2026-08-26T15:54:37.390691Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-first-set-winner-Hibino-vs-Siskova","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5,0.5,0.295,0.47,0.465,0.455,0.45,0.445]},{"source":"polymarket","id":"3888602","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-set-2-winner-Hibino-vs-Siskova","question":"Set 2 Winner: Hibino vs Siskova","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 2 Winner","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to “Hibino” if Nao Hibino wins set 2. It will resolve to “Siskova” if Anna Siskova wins set 2.\nIf the match begins but set 2 is not completed with a winner determined (including the match ending before set 2 is reached), this market will resolve 50-50.\nIf the match is canceled (not played at all) or play has not begun by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50.\nResolution will be based on official Grand Slam match statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Hibino","Siskova"],"outcome_prices":[0.435,0.565],"probability":0.435,"spread":0.09,"active":true,"closed":false,"start_date":"2026-08-25T22:44:20Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.065,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":2478.0867,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T17:52:12.690544Z","fetched_at":"2026-08-26T17:51:12.662477Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-set-2-winner-Hibino-vs-Siskova","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.505,0.505,0.495,0.5,0.29,0.5,0.47,0.46,0.46,0.455,0.465,0.455,0.45,0.43,0.435]},{"source":"polymarket","id":"3888643","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-set-handicap-away-1pt5","question":"Set Handicap: Siskova (-1.5) vs Hibino (+1.5)","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set Handicap +/-1.5","description":"This market refers to the tennis match between Anna Siskova and Nao Hibino in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Siskova\" if Anna Siskova wins by 2 or more sets than Nao Hibino, based on the final completed score. Otherwise, it will resolve to \"Hibino.\"\nIf the match begins but is not completed due to retirement, default, or disqualification, this market will resolve 50-50, unless the outcome of this market has already been unconditionally determined by the completed portion of play. For example, if the deciding set has begun when the match ends, Anna Siskova can no longer win by 2 or more sets, and this market will resolve to \"Hibino.\"\nIf the match is canceled before play begins, or a result has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50.\nResolution will be based on official Grand Slam results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Siskova","Hibino"],"outcome_prices":[0.385,0.615],"probability":0.385,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-25T22:44:21Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.11499999999999999,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":10568.2035,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T16:54:54.591126Z","fetched_at":"2026-08-26T16:54:00.358878Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-set-handicap-away-1pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5,0.5,0.5,0.5,0.385,0.38,0.375,0.38,0.39,0.385]},{"source":"polymarket","id":"3888619","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-set-handicap-home-1pt5","question":"Set Handicap: Hibino (-1.5) vs Siskova (+1.5)","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set Handicap +/-1.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Hibino\" if Nao Hibino wins by 2 or more sets than Anna Siskova, based on the final completed score. Otherwise, it will resolve to \"Siskova.\"\nIf the match begins but is not completed due to retirement, default, or disqualification, this market will resolve 50-50, unless the outcome of this market has already been unconditionally determined by the completed portion of play. For example, if the deciding set has begun when the match ends, Nao Hibino can no longer win by 2 or more sets, and this market will resolve to \"Siskova.\"\nIf the match is canceled before play begins, or a result has not been determined by September 9, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50.\nResolution will be based on official Grand Slam results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Hibino","Siskova"],"outcome_prices":[0.255,0.745],"probability":0.255,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-25T22:44:16Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.245,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":7631.6711,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T16:54:54.591126Z","fetched_at":"2026-08-26T16:54:00.358878Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-set-handicap-home-1pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.5,0.5,0.5,0.5,0.5,0.275,0.27,0.265,0.26,0.255]},{"source":"polymarket","id":"3888654","event_id":"912565","slug":"wta-hibino-siskova-2026-08-26-first-set-total-10pt5","question":"Hibino vs. Siskova: Set 1 Games O/U 10.5","group_item_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova Set 1 O/U 10.5","description":"This market refers to the tennis match between Nao Hibino and Anna Siskova in the US Open, Qualification WTA, originally scheduled for August 26, 2026 at 2:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed in the first set equals or exceeds 11. Otherwise, it will resolve to \"Under.\" Any first-set tiebreak counts as one (1) game.\nIf the match is postponed or suspended, this market will remain open until the first set has been completed. A postponement alone will not trigger a 50-50 resolution.\nIf the match is permanently abandoned before the first set is completed, or if the first set has not been completed by September 9, 2026, 11:59 PM ET, this market will resolve 50-50, unless the outcome has already been unconditionally determined based on completed play.\nThe primary resolution source for this market will be official Grand Slam statistics; however, a consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png","outcomes":["Over","Under"],"outcome_prices":[0.22,0.78],"probability":0.22,"spread":0.08,"active":true,"closed":false,"start_date":"2026-08-25T22:44:18Z","end_date":"2026-09-02T18:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.275,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":396.6404,"categories":["Sports"],"countries":[],"updated_at":"2026-08-26T18:48:41.835048Z","fetched_at":"2026-08-26T18:47:41.344655Z","added_at":"2026-08-25T22:54:29.551935Z","url":"https://polymarket.com/event/wta-hibino-siskova-2026-08-26/wta-hibino-siskova-2026-08-26-first-set-total-10pt5","event_title":"US Open, Qualification WTA: Nao Hibino vs Anna Siskova","chart_24h":[0.495,0.495,0.5,0.245,0.25,0.245,0.225,0.345]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/polymarket/912565","as_of":"2026-08-26T18:51:20.981324Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"US Open, Qualification WTA: Nao Hibino vs Anna Siskova\" — top market at 42% probability across 17 outcomes","source_url":null}}