{"source":"polymarket","id":"898369","ticker":"wta-avdeeva-sebov-2026-08-25","slug":"wta-avdeeva-sebov-2026-08-25","title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM ET.\n\nThis market will resolve to 'Julia Avdeeva' if Julia Avdeeva advances against Katherine Sebov.\n\nThis market will resolve to 'Katherine Sebov' if Katherine Sebov advances against Julia Avdeeva.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 8, 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":"2026-08-23T22:14:59Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":1157.9633660000002,"volume_24hr":1157.9633660000002,"volume_24h_change":null,"normalized_vol_24hr":20.6990966796875,"normalized_volume":11.330902099609375,"liquidity":71886.3733,"open_interest":1089.096898,"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: Julia Avdeeva vs Katherine Sebov Set 1 O/U 8.5","top_outcome_probability":0.615,"top_outcome_prob_24h_change":0.11499999999999999,"top_outcome_volume_24h_change":0.0,"updated_at":"2026-08-25T06:43:25.629823Z","fetched_at":"2026-08-25T06:43:25.629823Z","added_at":"2026-08-23T22:15:58.456635Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,521.267323,521.267323,926.3101510000001,926.3101510000001,926.3101510000001,926.3101510000001,926.3101510000001,926.3101510000001,1002.9633660000001,1002.9633660000001,1002.9633660000001,1157.9633660000002,1157.9633660000002],"markets":[{"source":"polymarket","id":"3824238","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-match-total-21pt5","question":"Avdeeva vs. Sebov: Match O/U 21.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Match O/U 21.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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 8, 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":[0.49,0.51],"probability":0.49,"spread":0.02,"active":true,"closed":false,"start_date":"2026-08-23T22:44:49Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":250.0,"volume_24hr":250.0,"prob_24h_change":-0.010000000000000009,"volume_24h_change":250.0,"normalized_vol_24hr":13.187406539916992,"normalized_volume":8.957441329956055,"liquidity":4644.8392,"categories":["Sports"],"countries":[],"updated_at":"2026-08-24T21:59:34.790685Z","fetched_at":"2026-08-24T21:57:41.463478Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-match-total-21pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.605,0.505,0.525,0.485,0.485,0.49]},{"source":"polymarket","id":"3823741","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25","question":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","group_item_title":null,"description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM ET.\n\nThis market will resolve to 'Julia Avdeeva' if Julia Avdeeva advances against Katherine Sebov.\n\nThis market will resolve to 'Katherine Sebov' if Katherine Sebov advances against Julia Avdeeva.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 8, 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":["Julia Avdeeva","Katherine Sebov"],"outcome_prices":[0.475,0.525],"probability":0.475,"spread":0.01,"active":true,"closed":false,"start_date":"2026-08-23T22:14:59Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":907.9633660000001,"volume_24hr":907.9633660000001,"prob_24h_change":-0.020000000000000018,"volume_24h_change":907.9633660000001,"normalized_vol_24hr":20.045263290405273,"normalized_volume":13.615586280822754,"liquidity":38720.9596,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T06:14:53.660838Z","fetched_at":"2026-08-25T06:12:35.095575Z","added_at":"2026-08-23T22:15:58.542958Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.495,0.49,0.485,0.49,0.485,0.495,0.465,0.475,0.495,0.495,0.495,0.495,0.485,0.48,0.475,0.475,0.475]},{"source":"polymarket","id":"3824232","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-first-set-total-8pt5","question":"Avdeeva vs. Sebov: Set 1 Games O/U 8.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 1 O/U 8.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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.\"\nAny first-set tiebreak counts as one (1) game toward the total.\nIf the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or play has not begun by September 8, 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":[0.615,0.385],"probability":0.615,"spread":0.23,"active":true,"closed":false,"start_date":"2026-08-23T22:44:29Z","end_date":"2026-09-01T15:00:00Z","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":800.4206,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T06:14:53.660838Z","fetched_at":"2026-08-25T06:12:35.095575Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-first-set-total-8pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.505,0.68,0.62,0.685,0.68,0.69,0.615,0.61,0.615,0.61,0.615,0.605,0.615]},{"source":"polymarket","id":"3828962","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-game-handicap-away-0pt5","question":"Game Spread: Sebov (-0.5) vs Avdeeva (+0.5)","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Game Spread +/-0.5","description":"This market will resolve to \"Sebov\" if Katherine Sebov wins 0.5 or more total games than Julia Avdeeva in the upcoming tennis match, scheduled for August 25, 2026 at 11:00AM ET. Otherwise, this market will resolve to \"Avdeeva\".\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.\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":["Sebov","Avdeeva"],"outcome_prices":[0.535,0.465],"probability":0.535,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-24T01:44:29Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.03500000000000003,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":2873.8843,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T06:45:52.817213Z","fetched_at":"2026-08-25T06:43:25.870667Z","added_at":"2026-08-24T01:51:07.856052Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-game-handicap-away-0pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.5,0.53,0.535]},{"source":"polymarket","id":"3823742","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-completed-match","question":"US Open, Qualification WTA: Completed Match: Julia Avdeeva vs Katherine Sebov","group_item_title":"Completed Match","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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 8, 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":"2026-08-23T22:14:59Z","end_date":"2026-09-01T15:00:00Z","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":10.44,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T01:04:12.347680Z","fetched_at":"2026-08-23T22:48:37.071641Z","added_at":"2026-08-23T22:15:58.542958Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-completed-match","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.5]},{"source":"polymarket","id":"3824233","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-set-2-total-8pt5","question":"Avdeeva vs. Sebov: Set 2 Games O/U 8.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 2 O/U 8.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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 8, 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":"2026-08-23T22:44:42Z","end_date":"2026-09-01T15:00:00Z","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":0.2,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T00:31:30.349917Z","fetched_at":"2026-08-24T15:07:28.436985Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-set-2-total-8pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.5]},{"source":"polymarket","id":"3824249","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-first-set-total-9pt5","question":"Avdeeva vs. Sebov: Set 1 Games O/U 9.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 1 O/U 9.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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.\"\nAny first-set tiebreak counts as one (1) game toward the total.\nIf the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or play has not begun by September 8, 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":0.82,"active":true,"closed":false,"start_date":"2026-08-23T22:44:43Z","end_date":"2026-09-01T15:00:00Z","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":53.5486,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T04:24:47.111562Z","fetched_at":"2026-08-25T04:22:36.551384Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-first-set-total-9pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.48,0.465,0.475,0.47,0.475,0.49,0.5]},{"source":"polymarket","id":"3824264","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-set-2-total-9pt5","question":"Avdeeva vs. Sebov: Set 2 Games O/U 9.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 2 O/U 9.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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 8, 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":"2026-08-23T22:44:41Z","end_date":"2026-09-01T15:00:00Z","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":0.2,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T00:31:30.349917Z","fetched_at":"2026-08-24T15:07:28.436985Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-set-2-total-9pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.5]},{"source":"polymarket","id":"3824293","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-set-2-total-10pt5","question":"Avdeeva vs. Sebov: Set 2 Games O/U 10.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 2 O/U 10.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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 8, 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":"2026-08-23T22:44:50Z","end_date":"2026-09-01T15:00:00Z","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":0.2,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T00:31:30.349917Z","fetched_at":"2026-08-24T15:07:28.436985Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-set-2-total-10pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.5]},{"source":"polymarket","id":"3824229","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-set-2-winner-Avdeeva-vs-Sebov","question":"Set 2 Winner: Avdeeva vs Sebov","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 2 Winner","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM ET.\nThis market will resolve to “Avdeeva” if Julia Avdeeva wins set 2. It will resolve to “Sebov” if Katherine Sebov 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 8, 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":["Avdeeva","Sebov"],"outcome_prices":[0.485,0.515],"probability":0.485,"spread":0.17,"active":true,"closed":false,"start_date":"2026-08-23T22:44:49Z","end_date":"2026-09-01T15:00:00Z","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":2531.32,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T06:45:52.817213Z","fetched_at":"2026-08-25T06:43:25.870667Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-set-2-winner-Avdeeva-vs-Sebov","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.485,0.49,0.49,0.485,0.485,0.485,0.49,0.49,0.495,0.485,0.485,0.485,0.48,0.465,0.485,0.475,0.485,0.485]},{"source":"polymarket","id":"3824230","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-first-set-winner-Avdeeva-vs-Sebov","question":"Set 1 Winner: Avdeeva vs Sebov","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 1 Winner","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM ET.\nThis market will resolve to “Avdeeva” if Julia Avdeeva wins the first set. It will resolve to “Sebov” if Katherine Sebov 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 8, 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":["Avdeeva","Sebov"],"outcome_prices":[0.475,0.525],"probability":0.475,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-23T22:44:48Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.025000000000000022,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":14777.2315,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T05:19:21.102405Z","fetched_at":"2026-08-25T05:16:45.331078Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-first-set-winner-Avdeeva-vs-Sebov","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.49,0.495,0.48,0.48,0.485,0.48,0.485,0.48,0.485,0.485,0.475,0.475,0.485,0.485,0.485,0.48,0.475]},{"source":"polymarket","id":"3824272","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-match-total-22pt5","question":"Avdeeva vs. Sebov: Match O/U 22.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Match O/U 22.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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 8, 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":[0.425,0.575],"probability":0.425,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-23T22:44:48Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.07500000000000001,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":5659.3144,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T06:45:52.817213Z","fetched_at":"2026-08-25T06:43:25.870667Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-match-total-22pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.475,0.475,0.465,0.455,0.455,0.45,0.455,0.46,0.43,0.43,0.435,0.435,0.425,0.43,0.425,0.435,0.435,0.425,0.43,0.425]},{"source":"polymarket","id":"3824231","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-set-totals-2pt5","question":"Julia Avdeeva vs. Katherine Sebov: Total Sets O/U 2.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Total Sets: O/U 2.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM ET.\nThis market will resolve to \"Over\" if the total number of sets completed equals or exceeds 3. Otherwise, it will resolve to \"Under.\" 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 the match is permanently abandoned before completion, or if the match has not been completed by September 8, 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 2.5","Under 2.5"],"outcome_prices":[0.365,0.635],"probability":0.365,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-23T22:44:42Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.135,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":4368.207,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T06:45:52.817213Z","fetched_at":"2026-08-25T06:43:25.870667Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-set-totals-2pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.5,0.385,0.37,0.365,0.37,0.37,0.365]},{"source":"polymarket","id":"3824282","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-first-set-total-10pt5","question":"Avdeeva vs. Sebov: Set 1 Games O/U 10.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set 1 O/U 10.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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.\"\nAny first-set tiebreak counts as one (1) game toward the total.\nIf the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or play has not begun by September 8, 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":[0.355,0.645],"probability":0.355,"spread":0.27,"active":true,"closed":false,"start_date":"2026-08-23T22:44:28Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.14500000000000002,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":728.8493,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T05:48:24.335528Z","fetched_at":"2026-08-25T05:46:12.374222Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-first-set-total-10pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.495,0.26,0.355,0.36,0.35,0.36,0.35,0.355,0.35,0.355,0.365,0.355,0.355]},{"source":"polymarket","id":"3824277","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-set-handicap-away-1pt5","question":"Set Handicap: Sebov (-1.5) vs Avdeeva (+1.5)","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set Handicap +/-1.5","description":"This market refers to the tennis match between Katherine Sebov and Julia Avdeeva in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM ET.\nThis market will resolve to \"Sebov\" if Katherine Sebov wins by 2 or more sets than Julia Avdeeva, based on the final completed score. Otherwise, it will resolve to \"Avdeeva.\"\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins, or a result has not been determined by September 8, 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":["Sebov","Avdeeva"],"outcome_prices":[0.345,0.655],"probability":0.345,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-23T22:44:48Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.265,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":6112.91,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T05:19:21.102405Z","fetched_at":"2026-08-25T05:16:45.331078Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-set-handicap-away-1pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.61,0.615,0.62,0.625,0.63,0.635,0.365,0.34,0.34,0.325,0.325,0.335,0.35,0.345]},{"source":"polymarket","id":"3824241","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-set-handicap-home-1pt5","question":"Set Handicap: Avdeeva (-1.5) vs Sebov (+1.5)","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Set Handicap +/-1.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM ET.\nThis market will resolve to \"Avdeeva\" if Julia Avdeeva wins by 2 or more sets than Katherine Sebov, based on the final completed score. Otherwise, it will resolve to \"Sebov.\"\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins, or a result has not been determined by September 8, 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":["Avdeeva","Sebov"],"outcome_prices":[0.295,0.705],"probability":0.295,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-23T22:44:28Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.31,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":5655.9982,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T05:19:21.102405Z","fetched_at":"2026-08-25T05:16:45.331078Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-set-handicap-home-1pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.605,0.61,0.61,0.615,0.615,0.62,0.305,0.295,0.31,0.305,0.305,0.3,0.295]},{"source":"polymarket","id":"3824297","event_id":"898369","slug":"wta-avdeeva-sebov-2026-08-25-match-total-23pt5","question":"Avdeeva vs. Sebov: Match O/U 23.5","group_item_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov Match O/U 23.5","description":"This market refers to the tennis match between Julia Avdeeva and Katherine Sebov in the US Open, Qualification WTA, originally scheduled for August 25, 2026 at 11:00AM 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 8, 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":[0.245,0.755],"probability":0.245,"spread":0.47,"active":true,"closed":false,"start_date":"2026-08-23T22:44:50Z","end_date":"2026-09-01T15:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.255,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":16.0604,"categories":["Sports"],"countries":[],"updated_at":"2026-08-25T06:43:25.870667Z","fetched_at":"2026-08-25T06:43:25.870667Z","added_at":"2026-08-23T22:48:37.071641Z","url":"https://polymarket.com/event/wta-avdeeva-sebov-2026-08-25/wta-avdeeva-sebov-2026-08-25-match-total-23pt5","event_title":"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov","chart_24h":[0.5,0.455,0.265,0.25,0.235,0.245,0.255,0.245,0.24,0.245,0.24,0.245,0.25,0.245]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/polymarket/898369","as_of":"2026-08-25T07:11:55.189020Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"US Open, Qualification WTA: Julia Avdeeva vs Katherine Sebov\" — top market at 48% probability across 17 outcomes","source_url":null}}