{"source":"polymarket","id":"793233","ticker":"wta-kalinsk-kessler-2026-08-04","slug":"wta-kalinsk-kessler-2026-08-04","title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\n\nThis market will resolve to 'Anna Kalinskaya' if Anna Kalinskaya advances against McCartney Kessler.\n\nThis market will resolve to 'McCartney Kessler' if McCartney Kessler advances against Anna Kalinskaya.\n\nIf the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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":"2026-08-03T22:00:51Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":6466.160576999998,"volume_24hr":6466.160577000001,"volume_24h_change":null,"normalized_vol_24hr":33.633697509765625,"normalized_volume":17.546035766601562,"liquidity":290313.2055,"open_interest":2729.11739,"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":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 1 O/U 8.5","top_outcome_probability":0.68,"top_outcome_prob_24h_change":0.18500000000000005,"top_outcome_volume_24h_change":0.0,"updated_at":"2026-08-04T21:46:54.846965Z","fetched_at":"2026-08-04T21:46:54.846965Z","added_at":"2026-08-03T22:13:23.092741Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04","chart_24h":[0.0,0.0,266.129028,266.129028,266.129028,393.509979,396.684581,396.684581,396.684581,396.684581,396.684581,396.684581,396.684581,438.034006,472.79206899999997,490.868991,490.868991,513.222999,834.350944,834.350944,875.7032939999999,900.3443179999999,901.9572199999999,1456.208336,1497.059735,1694.24006,2788.58739,6466.160577000001],"markets":[{"source":"polymarket","id":"3320535","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04","question":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","group_item_title":null,"description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\n\nThis market will resolve to 'Anna Kalinskaya' if Anna Kalinskaya advances against McCartney Kessler.\n\nThis market will resolve to 'McCartney Kessler' if McCartney Kessler advances against Anna Kalinskaya.\n\nIf the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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":["Anna Kalinskaya","McCartney Kessler"],"outcome_prices":[0.625,0.375],"probability":0.625,"spread":0.01,"active":true,"closed":false,"start_date":"2026-08-03T22:00:51Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":6298.848604,"volume_24hr":5795.560577000001,"prob_24h_change":0.06499999999999995,"volume_24h_change":5795.560577000001,"normalized_vol_24hr":35.61155700683594,"normalized_volume":22.453994750976562,"liquidity":279724.424,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:50:42.222733Z","fetched_at":"2026-08-04T21:46:55.066271Z","added_at":"2026-08-03T22:13:23.169833Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.56,0.6,0.61,0.605,0.61,0.61,0.615,0.61,0.61,0.61,0.61,0.61,0.625,0.615,0.615,0.615,0.615,0.615,0.615,0.615,0.605,0.605,0.605,0.605,0.625]},{"source":"polymarket","id":"3321441","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-match-total-21pt5","question":"Kalinskaya vs. Kessler: Match O/U 21.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Match O/U 21.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed across all sets equals or exceeds 22. Otherwise, it will resolve to \"Under.\"\nAll tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA 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":["Over","Under"],"outcome_prices":[0.515,0.485],"probability":0.515,"spread":0.01,"active":true,"closed":false,"start_date":"2026-08-03T23:01:03Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":670.6,"volume_24hr":670.6,"prob_24h_change":0.020000000000000018,"volume_24h_change":670.6,"normalized_vol_24hr":20.098739624023438,"normalized_volume":12.432692527770996,"liquidity":1645.9284,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:50:42.222733Z","fetched_at":"2026-08-04T21:46:55.066271Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-match-total-21pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.505,0.49,0.485,0.49,0.49,0.5,0.515]},{"source":"polymarket","id":"3321438","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-first-set-total-8pt5","question":"Kalinskaya vs. Kessler: Set 1 Games O/U 8.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 1 O/U 8.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM 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.\"\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 delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA 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":[0.68,0.32],"probability":0.68,"spread":0.04,"active":true,"closed":false,"start_date":"2026-08-03T23:01:01Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.18500000000000005,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":4987.8666,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T19:48:21.258185Z","fetched_at":"2026-08-04T19:46:27.463838Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-first-set-total-8pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.5,0.495,0.505,0.68,0.675,0.67,0.665,0.67,0.675,0.685,0.675,0.68]},{"source":"polymarket","id":"3321440","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-set-2-winner-Kalinskaya-vs-Kessler","question":"Set 2 Winner: Kalinskaya vs Kessler","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 2 Winner","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\nThis market will resolve to “Kalinskaya” if Anna Kalinskaya wins set 2. It will resolve to “Kessler” if McCartney Kessler 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 is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50.\nResolution will be based on official WTA 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":["Kalinskaya","Kessler"],"outcome_prices":[0.61,0.39],"probability":0.61,"spread":0.18,"active":true,"closed":false,"start_date":"2026-08-03T23:01:05Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.05499999999999994,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":356.2338,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:48:39.141666Z","fetched_at":"2026-08-04T21:46:55.066271Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-set-2-winner-Kalinskaya-vs-Kessler","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.555,0.335,0.35,0.35,0.585,0.59,0.59,0.595,0.59,0.585,0.59,0.585,0.58,0.58,0.585,0.59,0.61]},{"source":"polymarket","id":"3321444","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-first-set-winner-Kalinskaya-vs-Kessler","question":"Set 1 Winner: Kalinskaya vs Kessler","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 1 Winner","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\nThis market will resolve to “Kalinskaya” if Anna Kalinskaya wins the first set. It will resolve to “Kessler” if McCartney Kessler 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 is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50.\nResolution will be based on official WTA 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":["Kalinskaya","Kessler"],"outcome_prices":[0.595,0.405],"probability":0.595,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-03T23:01:04Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.039999999999999925,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":14389.9136,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:24:55.460826Z","fetched_at":"2026-08-04T21:23:38.190284Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-first-set-winner-Kalinskaya-vs-Kessler","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.555,0.575,0.585,0.585,0.585,0.585,0.585,0.59,0.585,0.59,0.585,0.585,0.575,0.59,0.595,0.575,0.575,0.585,0.595,0.595,0.59,0.595]},{"source":"polymarket","id":"3320538","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-completed-match","question":"National Bank Open: Completed Match: Anna Kalinskaya vs McCartney Kessler","group_item_title":"Completed Match","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM 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 is delayed beyond 7 days from the scheduled date without a winner determined, 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":"2026-08-03T22:00:51Z","end_date":"2026-08-11T21:00:00Z","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":"2026-08-03T23:15:36.973664Z","fetched_at":"2026-08-03T22:13:23.169833Z","added_at":"2026-08-03T22:13:23.169833Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-completed-match","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.5,0.5]},{"source":"polymarket","id":"3321439","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-set-2-total-8pt5","question":"Kalinskaya vs. Kessler: Set 2 Games O/U 8.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 2 O/U 8.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM 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 delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA 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":1.0,"active":true,"closed":false,"start_date":"2026-08-03T23:01:02Z","end_date":"2026-08-11T21:00:00Z","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":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T13:28:43.063475Z","fetched_at":"2026-08-04T13:28:43.063475Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-set-2-total-8pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.5,0.5]},{"source":"polymarket","id":"3321445","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-set-2-total-9pt5","question":"Kalinskaya vs. Kessler: Set 2 Games O/U 9.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 2 O/U 9.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM 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 delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA 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":1.0,"active":true,"closed":false,"start_date":"2026-08-03T23:01:04Z","end_date":"2026-08-11T21:00:00Z","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":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T13:28:43.063475Z","fetched_at":"2026-08-04T13:28:43.063475Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-set-2-total-9pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.5,0.5]},{"source":"polymarket","id":"3321448","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-set-2-total-10pt5","question":"Kalinskaya vs. Kessler: Set 2 Games O/U 10.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 2 O/U 10.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM 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 delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA 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":1.0,"active":true,"closed":false,"start_date":"2026-08-03T23:01:03Z","end_date":"2026-08-11T21:00:00Z","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":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T13:28:43.063475Z","fetched_at":"2026-08-04T13:28:43.063475Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-set-2-total-10pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.5,0.5]},{"source":"polymarket","id":"3321450","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-match-total-23pt5","question":"Kalinskaya vs. Kessler: Match O/U 23.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Match O/U 23.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed across all sets equals or exceeds 24. Otherwise, it will resolve to \"Under.\"\nAll tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA 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":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":true,"closed":false,"start_date":"2026-08-03T23:01:02Z","end_date":"2026-08-11T21:00:00Z","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":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:48:39.141666Z","fetched_at":"2026-08-04T21:46:55.066271Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-match-total-23pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.495,0.415,0.3,0.29,0.26,0.385,0.39,0.39,0.395,0.4,0.395,0.5]},{"source":"polymarket","id":"3321446","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-first-set-total-9pt5","question":"Kalinskaya vs. Kessler: Set 1 Games O/U 9.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 1 O/U 9.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM 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.\"\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 delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA 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":[0.455,0.545],"probability":0.455,"spread":0.07,"active":true,"closed":false,"start_date":"2026-08-03T23:01:00Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.03999999999999998,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":18.6,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:48:39.141666Z","fetched_at":"2026-08-04T21:46:55.066271Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-first-set-total-9pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.47,0.445,0.465,0.45,0.45,0.455,0.44,0.44,0.445,0.45,0.455,0.46,0.455]},{"source":"polymarket","id":"3321447","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-match-total-22pt5","question":"Kalinskaya vs. Kessler: Match O/U 22.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Match O/U 22.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\nThis market will resolve to \"Over\" if the total number of games completed across all sets equals or exceeds 23. Otherwise, it will resolve to \"Under.\"\nAll tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA 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":["Over","Under"],"outcome_prices":[0.43,0.57],"probability":0.43,"spread":0.04,"active":true,"closed":false,"start_date":"2026-08-03T23:01:01Z","end_date":"2026-08-11T21:00:00Z","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":1137.1549,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:48:39.141666Z","fetched_at":"2026-08-04T21:46:55.066271Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-match-total-22pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.49,0.415,0.3,0.29,0.425,0.43,0.435,0.435,0.43]},{"source":"polymarket","id":"3321443","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-set-handicap-home-1pt5","question":"Set Handicap: Kalinskaya (-1.5) vs Kessler (+1.5)","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set Handicap +/-1.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\nThis market will resolve to \"Kalinskaya\" if Anna Kalinskaya wins by 2 or more sets than McCartney Kessler, based on the final completed score. Otherwise, it will resolve to \"Kessler.\"\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA 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":["Kalinskaya","Kessler"],"outcome_prices":[0.395,0.605],"probability":0.395,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-03T23:01:02Z","end_date":"2026-08-11T21:00:00Z","closed_time":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.10499999999999998,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":5638.1022,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T21:48:39.141666Z","fetched_at":"2026-08-04T21:46:55.066271Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-set-handicap-home-1pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.5,0.5,0.435,0.43,0.395,0.4,0.415,0.41,0.425,0.42,0.41,0.41,0.405,0.405,0.405,0.4,0.405,0.395]},{"source":"polymarket","id":"3321442","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-set-totals-2pt5","question":"Anna Kalinskaya vs. McCartney Kessler: Total Sets O/U 2.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Total Sets: O/U 2.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM ET.\nThis market will resolve to \"Over\" if the total number of sets completed equals or exceeds 3. Otherwise, it will resolve to \"Under.\"\nA super tie breaker is considered as one (1) set for total set markets.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA 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":["Over 2.5","Under 2.5"],"outcome_prices":[0.385,0.615],"probability":0.385,"spread":0.03,"active":true,"closed":false,"start_date":"2026-08-03T23:01:03Z","end_date":"2026-08-11T21:00:00Z","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":9127.1015,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T19:22:40.714346Z","fetched_at":"2026-08-04T19:21:00.063430Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-set-totals-2pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.5,0.5,0.38,0.405,0.365,0.375,0.385,0.385,0.385,0.385,0.385]},{"source":"polymarket","id":"3321449","event_id":"793233","slug":"wta-kalinsk-kessler-2026-08-04-first-set-total-10pt5","question":"Kalinskaya vs. Kessler: Set 1 Games O/U 10.5","group_item_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler Set 1 O/U 10.5","description":"This market refers to the tennis match between Anna Kalinskaya and McCartney Kessler in the National Bank Open, originally scheduled for August 4, 2026 at 5:00PM 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.\"\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 delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA 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":[0.23,0.77],"probability":0.23,"spread":0.04,"active":true,"closed":false,"start_date":"2026-08-03T23:01:05Z","end_date":"2026-08-11T21:00:00Z","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":3734.0669,"categories":["Sports"],"countries":[],"updated_at":"2026-08-04T19:48:21.258185Z","fetched_at":"2026-08-04T19:46:27.463838Z","added_at":"2026-08-03T23:13:11.468451Z","url":"https://polymarket.com/event/wta-kalinsk-kessler-2026-08-04/wta-kalinsk-kessler-2026-08-04-first-set-total-10pt5","event_title":"National Bank Open: Anna Kalinskaya vs McCartney Kessler","chart_24h":[0.495,0.495,0.49,0.495,0.49,0.235,0.24,0.235,0.24,0.23,0.225,0.23]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/polymarket/793233","as_of":"2026-08-04T22:00:52.958464Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"National Bank Open: Anna Kalinskaya vs McCartney Kessler\" — top market at 62% probability across 15 outcomes","source_url":null}}