{"_meta":{"attribution":"Data aggregated by pdata.world (https://pdata.world) from 8 prediction-market venues; CC BY 4.0; source data © each venue.","canonical_url":"https://pdata.world/events/polymarket/1189990","as_of":"2026-10-15T13:03:53.939204Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"M15 Bol: Nikita Mashtakov vs Henry Best\" — closed 2026-10-15; final leader \"\" at 100%. https://pdata.world/events/polymarket/1189990","source_url":"https://polymarket.com/event/itf-mashta1-best1-2026-10-15"},"source":"polymarket","id":"1189990","ticker":"itf-mashta1-best1-2026-10-15","slug":"itf-mashta1-best1-2026-10-15","title":"M15 Bol: Nikita Mashtakov vs Henry Best","description":"This market refers to the tennis match between Nikita Mashtakov and Henry Best in the M15 Bol, Main Draw, originally scheduled for October 15, 2026 at 3:30AM ET.\n\nThis market will resolve to 'Nikita Mashtakov' if Nikita Mashtakov advances against Henry Best.\n\nThis market will resolve to 'Henry Best' if Henry Best advances against Nikita Mashtakov.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 29, 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 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":"2026-10-14T19:59:15Z","end_date":"2026-10-22T07:30:00Z","closed_time":"2026-10-15T12:04:55Z","volume":4399.1117380000005,"volume_24hr":4399.111738,"volume_24h_change":null,"normalized_vol_24hr":26.78175163269043,"normalized_volume":15.988309860229492,"liquidity":null,"open_interest":3320.731538,"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":"","top_outcome_probability":1.0,"top_outcome_prob_24h_change":0.05500000000000005,"top_outcome_volume_24h_change":4399.111738,"updated_at":"2026-10-15T12:31:08.380814Z","fetched_at":"2026-10-15T12:31:08.380814Z","added_at":"2026-10-14T20:22:38.516189Z","url":"https://polymarket.com/event/itf-mashta1-best1-2026-10-15","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,10.16665,10.16665,30.59821,30.59821,30.59821,30.59821,30.59821,2043.238922,4007.2049289999995,4399.111738,4399.111738,4399.111738,4399.111738],"kind":"live","mutually_exclusive":false,"markets_total":3,"markets":[{"source":"polymarket","id":"5700681","event_id":"1189990","slug":"itf-mashta1-best1-2026-10-15","question":"M15 Bol: Nikita Mashtakov vs Henry Best","group_item_title":null,"description":"This market refers to the tennis match between Nikita Mashtakov and Henry Best in the M15 Bol, Main Draw, originally scheduled for October 15, 2026 at 3:30AM ET.\n\nThis market will resolve to 'Nikita Mashtakov' if Nikita Mashtakov advances against Henry Best.\n\nThis market will resolve to 'Henry Best' if Henry Best advances against Nikita Mashtakov.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 29, 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 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":["Nikita Mashtakov","Henry Best"],"outcome_prices":[1.0,0.0],"probability":1.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-10-14T19:59:15Z","end_date":"2026-10-22T07:30:00Z","closed_time":"2026-10-15T12:04:55Z","result":"Nikita Mashtakov","volume":4399.1117380000005,"volume_24hr":4399.111738,"prob_24h_change":0.05500000000000005,"volume_24h_change":4399.111738,"normalized_vol_24hr":27.13739013671875,"normalized_volume":20.64944839477539,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-10-15T12:31:08.477162Z","fetched_at":"2026-10-15T12:31:08.477162Z","added_at":"2026-10-14T20:22:38.653183Z","url":"https://polymarket.com/event/itf-mashta1-best1-2026-10-15/itf-mashta1-best1-2026-10-15","event_title":"M15 Bol: Nikita Mashtakov vs Henry Best","chart_24h":[0.945,0.945,0.955,0.95,0.95,0.945,0.955,0.81,0.5,0.86,0.9995,0.9995,0.9995,1.0]},{"source":"polymarket","id":"5707433","event_id":"1189990","slug":"itf-mashta1-best1-2026-10-15-set-handicap-home-1pt5","question":"Set Handicap: Nikita Mashtakov (-1.5) vs Henry Best (+1.5)","group_item_title":"M15 Bol: Nikita Mashtakov vs Henry Best Set Handicap +/-1.5","description":"This market refers to the tennis match between Nikita Mashtakov and Henry Best in the M15 Bol, originally scheduled for October 15, 2026 at 3:30AM ET.\nThis market will resolve to \"Nikita Mashtakov\" if Nikita Mashtakov wins by 2 or more sets than Henry Best, based on the final completed score. Otherwise, it will resolve to \"Henry Best.\"\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 under the match format published by the tournament organizer for that round. For example, if the deciding set has begun when the match ends, Nikita Mashtakov can no longer win by 2 or more sets, and this market will resolve to \"Henry Best.\"\nIf the match is canceled before play begins, or a result has not been determined by October 29, 2026, 11:59 PM ET (14 days after the scheduled start), this market will 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":["Nikita Mashtakov","Henry Best"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-10-14T20:44:18Z","end_date":"2026-10-22T07:30:00Z","closed_time":"2026-10-15T10:53:55Z","result":"Henry Best","volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.5,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-10-15T11:15:56.040259Z","fetched_at":"2026-10-15T11:15:56.040259Z","added_at":"2026-10-14T20:47:56.638409Z","url":"https://polymarket.com/event/itf-mashta1-best1-2026-10-15/itf-mashta1-best1-2026-10-15-set-handicap-home-1pt5","event_title":"M15 Bol: Nikita Mashtakov vs Henry Best","chart_24h":[0.5,0.805,0.495,0.5,0.495,0.5,0.5,0.0945,0.0005,0.0]},{"source":"polymarket","id":"5707439","event_id":"1189990","slug":"itf-mashta1-best1-2026-10-15-set-handicap-away-1pt5","question":"Set Handicap: Henry Best (-1.5) vs Nikita Mashtakov (+1.5)","group_item_title":"M15 Bol: Nikita Mashtakov vs Henry Best Set Handicap +/-1.5","description":"This market refers to the tennis match between Henry Best and Nikita Mashtakov in the M15 Bol, originally scheduled for October 15, 2026 at 3:30AM ET.\nThis market will resolve to \"Henry Best\" if Henry Best wins by 2 or more sets than Nikita Mashtakov, based on the final completed score. Otherwise, it will resolve to \"Nikita Mashtakov.\"\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 under the match format published by the tournament organizer for that round. For example, if the deciding set has begun when the match ends, Henry Best can no longer win by 2 or more sets, and this market will resolve to \"Nikita Mashtakov.\"\nIf the match is canceled before play begins, or a result has not been determined by October 29, 2026, 11:59 PM ET (14 days after the scheduled start), this market will 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":["Henry Best","Nikita Mashtakov"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.009,"active":false,"closed":true,"start_date":"2026-10-14T20:44:18Z","end_date":"2026-10-22T07:30:00Z","closed_time":"2026-10-15T11:21:27Z","result":"Nikita Mashtakov","volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.5,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-10-15T11:41:23.837484Z","fetched_at":"2026-10-15T11:41:23.837484Z","added_at":"2026-10-14T20:47:56.638409Z","url":"https://polymarket.com/event/itf-mashta1-best1-2026-10-15/itf-mashta1-best1-2026-10-15-set-handicap-away-1pt5","event_title":"M15 Bol: Nikita Mashtakov vs Henry Best","chart_24h":[0.5,0.495,0.495,0.5,0.5,0.0945,0.0005,0.0045,0.0]}]}