{"source":"polymarket","id":"605339","ticker":"itf-saitoh-heck-2026-06-18","slug":"itf-saitoh-heck-2026-06-18","title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Men Tokyo, originally scheduled for June 18, 2026 at 1:15AM ET.\n\nThis market will resolve to 'Keisuke Saitoh' if Keisuke Saitoh advances against Hunter Heck.\n\nThis market will resolve to 'Hunter Heck' if Hunter Heck advances against Keisuke Saitoh.\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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","active":false,"closed":true,"start_date":"2026-06-17T18:18:22.253699Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T11:00:02Z","volume":1249.087562,"volume_24hr":1249.0875620000002,"volume_24h_change":null,"normalized_vol_24hr":14.813557624816895,"normalized_volume":10.81667423248291,"liquidity":0.0,"open_interest":963.59141,"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":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 1 O/U 8.5","top_outcome_probability":1.0,"top_outcome_prob_24h_change":0.625,"top_outcome_volume_24h_change":14.0,"updated_at":"2026-06-18T11:20:39.271061Z","fetched_at":"2026-06-18T11:20:39.271061Z","added_at":"2026-06-17T18:22:14.404566Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18","chart_24h":[0.0,0.0,0.0,0.0,1.886791,1.886791,1.886791,1.886791,1.886791,1.886791,59.076848,59.076848,114.63240199999998,114.63240199999998,114.63240199999998,114.63240199999998,421.880773,692.540647,982.956027,982.956027,1049.167562,1091.167562,1179.537562,1193.537562,1249.0875620000002],"markets":[{"source":"polymarket","id":"2585963","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-first-set-total-8pt5","question":"Saitoh vs. Heck: Set 1 Games O/U 8.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 1 O/U 8.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[1.0,0.0],"probability":1.0,"spread":0.01,"active":false,"closed":true,"start_date":"2026-06-17T19:36:20.657232Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T09:42:31Z","volume":14.0,"volume_24hr":14.0,"prob_24h_change":0.625,"volume_24h_change":14.0,"normalized_vol_24hr":2.635927200317383,"normalized_volume":2.0327868461608887,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T09:50:37.972488Z","fetched_at":"2026-06-18T09:50:06.207633Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-first-set-total-8pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.375,0.5,0.7,0.695,0.69,0.5,0.69,0.375,0.715,0.38,0.38,0.375,0.5,0.995,1.0]},{"source":"polymarket","id":"2585967","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-first-set-total-9pt5","question":"Saitoh vs. Heck: Set 1 Games O/U 9.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 1 O/U 9.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[1.0,0.0],"probability":1.0,"spread":0.01,"active":false,"closed":true,"start_date":"2026-06-17T19:56:19.349303Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T09:38:47Z","volume":14.0,"volume_24hr":14.0,"prob_24h_change":0.5,"volume_24h_change":14.0,"normalized_vol_24hr":2.635927200317383,"normalized_volume":2.0327868461608887,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T09:50:37.972488Z","fetched_at":"2026-06-18T09:50:06.207633Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-first-set-total-9pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.5,0.505,0.5,0.5,0.995,1.0]},{"source":"polymarket","id":"2585965","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-set-handicap-away-1pt5","question":"Set Handicap: Heck (-1.5) vs Saitoh (+1.5)","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set Handicap +/-1.5","description":"This market refers to the tennis match between Hunter Heck and Keisuke Saitoh in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM ET.\nThis market will resolve to \"Heck\" if Hunter Heck wins by 2 or more sets than Keisuke Saitoh, based on the final completed score. Otherwise, it will resolve to \"Saitoh.\"\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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Heck","Saitoh"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T20:04:51.959966Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T11:00:02Z","volume":12.009274000000001,"volume_24hr":12.009274,"prob_24h_change":-0.135,"volume_24h_change":12.009274,"normalized_vol_24hr":2.366023302078247,"normalized_volume":1.824641227722168,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T11:20:39.297037Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-set-handicap-away-1pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.635,0.635,0.635,0.33,0.335,0.34,0.65,0.36,0.345,0.36,0.65,0.65,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2583517","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18","question":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","group_item_title":null,"description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Men Tokyo, originally scheduled for June 18, 2026 at 1:15AM ET.\n\nThis market will resolve to 'Keisuke Saitoh' if Keisuke Saitoh advances against Hunter Heck.\n\nThis market will resolve to 'Hunter Heck' if Hunter Heck advances against Keisuke Saitoh.\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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Keisuke Saitoh","Hunter Heck"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-06-17T18:15:19.468914Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T10:59:02Z","volume":1027.232136,"volume_24hr":1027.232136,"prob_24h_change":-0.51,"volume_24h_change":1027.232136,"normalized_vol_24hr":17.289705276489258,"normalized_volume":13.33355712890625,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T11:20:42.571660Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T18:22:14.535828Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.51,0.495,0.49,0.505,0.52,0.52,0.515,0.485,0.48,0.475,0.48,0.475,0.48,0.475,0.475,0.495,0.495,0.5,0.055,0.0005,0.0005,0.0]},{"source":"polymarket","id":"2583518","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-completed-match","question":"ITF Men Tokyo: Completed Match: Keisuke Saitoh vs Hunter Heck","group_item_title":"Completed Match","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Men Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Yes","No"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.01,"active":false,"closed":true,"start_date":"2026-06-17T17:43:18.280084Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T10:59:02Z","volume":14.0,"volume_24hr":14.0,"prob_24h_change":-0.5,"volume_24h_change":14.0,"normalized_vol_24hr":2.635927200317383,"normalized_volume":2.0327868461608887,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T11:20:42.571660Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T18:22:14.535828Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-completed-match","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.5,0.5,0.0055,0.005,0.0]},{"source":"polymarket","id":"2585964","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-first-set-winner-Saitoh-vs-Heck","question":"Set 1 Winner: Saitoh vs Heck","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 1 Winner","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM ET.\nThis market will resolve to “Saitoh” if Keisuke Saitoh wins the first set. It will resolve to “Heck” if Hunter Heck 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 ITF match statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Saitoh","Heck"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-06-17T19:35:10.353516Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T09:53:49Z","volume":153.846152,"volume_24hr":153.846152,"prob_24h_change":-0.5,"volume_24h_change":153.846152,"normalized_vol_24hr":9.139029502868652,"normalized_volume":7.04788064956665,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T10:05:16.292135Z","fetched_at":"2026-06-18T10:04:42.753080Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-first-set-winner-Saitoh-vs-Heck","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.52,0.52,0.515,0.52,0.515,0.49,0.49,0.49,0.49,0.49,0.5,0.5,0.0005,0.0]},{"source":"polymarket","id":"2585970","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-first-set-total-10pt5","question":"Saitoh vs. Heck: Set 1 Games O/U 10.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 1 O/U 10.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.01,"active":false,"closed":true,"start_date":"2026-06-17T19:11:20.586196Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T09:37:46Z","volume":14.0,"volume_24hr":14.0,"prob_24h_change":-0.5,"volume_24h_change":14.0,"normalized_vol_24hr":2.635927200317383,"normalized_volume":2.0327868461608887,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T09:50:37.972488Z","fetched_at":"2026-06-18T09:50:06.207633Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-first-set-total-10pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.235,0.145,0.235,0.235,0.24,0.245,0.5,0.585,0.595,0.225,0.59,0.595,0.595,0.5,0.005,0.0]},{"source":"polymarket","id":"2585960","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-set-2-winner-Saitoh-vs-Heck","question":"Set 2 Winner: Saitoh vs Heck","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 2 Winner","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM ET.\nThis market will resolve to “Saitoh” if Keisuke Saitoh wins set 2. It will resolve to “Heck” if Hunter Heck 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 ITF match statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Saitoh","Heck"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T19:29:52.257402Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T10:59:02Z","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":"2026-06-18T11:20:39.297037Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-set-2-winner-Saitoh-vs-Heck","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.485,0.495,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2585961","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-set-totals-2pt5","question":"Keisuke Saitoh vs. Hunter Heck: Total Sets O/U 2.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Total Sets: O/U 2.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over 2.5","Under 2.5"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T19:42:00.770783Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T10:59:02Z","volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.15000000000000002,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T11:20:39.297037Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-set-totals-2pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.65,0.65,0.355,0.365,0.365,0.365,0.36,0.65,0.345,0.36,0.65,0.645,0.65,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2585962","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-match-total-21pt5","question":"Saitoh vs. Heck: Match O/U 21.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Match O/U 21.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T20:20:26.385907Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T11:00:02Z","volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.030000000000000027,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T11:20:39.297037Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-match-total-21pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.47,0.705,0.47,0.47,0.47,0.475,0.47,0.475,0.475,0.475,0.475,0.255,0.5,0.48,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2585966","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-set-2-total-8pt5","question":"Saitoh vs. Heck: Set 2 Games O/U 8.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 2 O/U 8.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T20:03:49.217502Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T11:00:02Z","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":"2026-06-18T11:20:39.297037Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-set-2-total-8pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.5,0.495,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2585968","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-match-total-22pt5","question":"Saitoh vs. Heck: Match O/U 22.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Match O/U 22.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T19:39:56.120623Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T11:00:02Z","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":"2026-06-18T11:20:39.297037Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-match-total-22pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.5,0.5,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2585969","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-set-2-total-9pt5","question":"Saitoh vs. Heck: Set 2 Games O/U 9.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 2 O/U 9.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T19:42:10.700869Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T11:00:02Z","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":"2026-06-18T11:20:39.297037Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-set-2-total-9pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.5,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2585971","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-match-total-23pt5","question":"Saitoh vs. Heck: Match O/U 23.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Match O/U 23.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF statistics.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.51,"active":false,"closed":true,"start_date":"2026-06-17T19:30:03.441472Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T11:00:02Z","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":"2026-06-18T11:20:42.571660Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-match-total-23pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.495,0.5,0.5,0.5,0.5,0.5]},{"source":"polymarket","id":"2585972","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-set-2-total-10pt5","question":"Saitoh vs. Heck: Set 2 Games O/U 10.5","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set 2 O/U 10.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM 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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Over","Under"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":0.99,"active":false,"closed":true,"start_date":"2026-06-17T20:00:40.531253Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T10:59:02Z","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":"2026-06-18T11:20:42.571660Z","fetched_at":"2026-06-18T11:20:39.297037Z","added_at":"2026-06-17T19:08:28.415373Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-set-2-total-10pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.5,0.5,0.5,0.505,0.505,0.5]},{"source":"polymarket","id":"2586652","event_id":"605339","slug":"itf-saitoh-heck-2026-06-18-set-handicap-home-1pt5","question":"Set Handicap: Saitoh (-1.5) vs Heck (+1.5)","group_item_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck Set Handicap +/-1.5","description":"This market refers to the tennis match between Keisuke Saitoh and Hunter Heck in the ITF Tokyo, originally scheduled for June 18, 2026 at 1:15AM ET.\nThis market will resolve to \"Saitoh\" if Keisuke Saitoh wins by 2 or more sets than Hunter Heck, based on the final completed score. Otherwise, it will resolve to \"Heck.\"\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 ITF results.","image":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","icon":"https://polymarket-upload.s3.us-east-2.amazonaws.com/itf-5206dc6c54.png","outcomes":["Saitoh","Heck"],"outcome_prices":[0.5,0.5],"probability":0.5,"spread":1.0,"active":false,"closed":true,"start_date":"2026-06-17T20:25:02.288937Z","end_date":"2026-06-25T05:15:00Z","closed_time":"2026-06-18T10:56:46Z","volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.15500000000000003,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-06-18T11:04:00.666626Z","fetched_at":"2026-06-18T11:04:00.666626Z","added_at":"2026-06-17T20:11:04.477458Z","url":"https://polymarket.com/event/itf-saitoh-heck-2026-06-18/itf-saitoh-heck-2026-06-18-set-handicap-home-1pt5","event_title":"ITF Tokyo: Keisuke Saitoh vs Hunter Heck","chart_24h":[0.655,0.655,0.365,0.37,0.5,0.34,0.635,0.315,0.635,0.635,0.635,0.5,0.5,0.5,0.5]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/polymarket/605339","as_of":"2026-06-18T12:20:52.874485Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"ITF Tokyo: Keisuke Saitoh vs Hunter Heck\" — top market at 0% probability across 16 outcomes","source_url":null}}