{"_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/1225859","as_of":"2026-10-21T16:09:17.932749Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova\" — closed 2026-10-21; final leader \"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova Set Handicap +/-1.5\" at 100%. https://pdata.world/events/polymarket/1225859","source_url":"https://polymarket.com/event/itf-gramma1-krejco1-2026-10-21"},"source":"polymarket","id":"1225859","ticker":"itf-gramma1-krejco1-2026-10-21","slug":"itf-gramma1-krejco1-2026-10-21","title":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova","description":"This market refers to the tennis match between Valentini Grammatikopoulou and Tereza Krejcova in the W15 Karlovy Vary, Main Draw, originally scheduled for October 21, 2026 at 5:30AM ET.\n\nThis market will resolve to 'Valentini Grammatikopoulou' if Valentini Grammatikopoulou advances against Tereza Krejcova.\n\nThis market will resolve to 'Tereza Krejcova' if Tereza Krejcova advances against Valentini Grammatikopoulou.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 4, 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":"2026-10-20T20:14:18Z","end_date":"2026-10-28T09:30:00Z","closed_time":"2026-10-21T14:09:06Z","volume":2720.832924,"volume_24hr":2720.832924,"volume_24h_change":null,"normalized_vol_24hr":24.32686424255371,"normalized_volume":14.207762718200684,"liquidity":0.0,"open_interest":2652.353524,"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":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova Set Handicap +/-1.5","top_outcome_probability":1.0,"top_outcome_prob_24h_change":0.5,"top_outcome_volume_24h_change":0.0,"updated_at":"2026-10-21T14:28:28.993588Z","fetched_at":"2026-10-21T14:28:28.993588Z","added_at":"2026-10-20T20:34:56.716752Z","url":"https://polymarket.com/event/itf-gramma1-krejco1-2026-10-21","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,36.19,36.19,36.19,36.19,36.19,796.809048,796.809048,796.809048,1227.803567,2720.832924,2720.832924,2720.832924,2720.832924],"kind":"live","mutually_exclusive":false,"markets_total":3,"markets":[{"source":"polymarket","id":"5992273","event_id":"1225859","slug":"itf-gramma1-krejco1-2026-10-21","question":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova","group_item_title":null,"description":"This market refers to the tennis match between Valentini Grammatikopoulou and Tereza Krejcova in the W15 Karlovy Vary, Main Draw, originally scheduled for October 21, 2026 at 5:30AM ET.\n\nThis market will resolve to 'Valentini Grammatikopoulou' if Valentini Grammatikopoulou advances against Tereza Krejcova.\n\nThis market will resolve to 'Tereza Krejcova' if Tereza Krejcova advances against Valentini Grammatikopoulou.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 4, 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":["Valentini Grammatikopoulou","Tereza Krejcova"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-10-20T20:14:18Z","end_date":"2026-10-28T09:30:00Z","closed_time":"2026-10-21T14:09:10.255379Z","result":"Tereza Krejcova","volume":2720.832924,"volume_24hr":2720.832924,"prob_24h_change":-0.66,"volume_24h_change":2720.832924,"normalized_vol_24hr":25.363609313964844,"normalized_volume":18.352617263793945,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-10-21T14:28:29.067549Z","fetched_at":"2026-10-21T14:28:29.067549Z","added_at":"2026-10-20T20:34:56.794506Z","url":"https://polymarket.com/event/itf-gramma1-krejco1-2026-10-21/itf-gramma1-krejco1-2026-10-21","event_title":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova","chart_24h":[0.66,0.61,0.68,0.68,0.68,0.68,0.69,0.7,0.7,0.645,0.64,0.635,0.62,0.635,0.59,0.465,0.28,0.0005,0.0005,0.0]},{"source":"polymarket","id":"5992562","event_id":"1225859","slug":"itf-gramma1-krejco1-2026-10-21-set-handicap-away-1pt5","question":"Set Handicap: Tereza Krejcova (-1.5) vs Valentini Grammatikopoulou (+1.5)","group_item_title":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova Set Handicap +/-1.5","description":"This market refers to the tennis match between Tereza Krejcova and Valentini Grammatikopoulou in the W15 Karlovy Vary, originally scheduled for October 21, 2026 at 5:30AM ET.\nThis market will resolve to \"Tereza Krejcova\" if Tereza Krejcova wins by 2 or more sets than Valentini Grammatikopoulou, based on the final completed score. Otherwise, it will resolve to \"Valentini Grammatikopoulou.\"\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, Tereza Krejcova can no longer win by 2 or more sets, and this market will resolve to \"Valentini Grammatikopoulou.\"\nIf the match is canceled before play begins, or a result has not been determined by November 4, 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":["Tereza Krejcova","Valentini Grammatikopoulou"],"outcome_prices":[1.0,0.0],"probability":1.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-10-20T20:44:14Z","end_date":"2026-10-28T09:30:00Z","closed_time":"2026-10-21T14:09:10.286212Z","result":"Tereza Krejcova","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":"2026-10-21T14:28:29.067549Z","fetched_at":"2026-10-21T14:28:29.067549Z","added_at":"2026-10-20T20:57:45.194031Z","url":"https://polymarket.com/event/itf-gramma1-krejco1-2026-10-21/itf-gramma1-krejco1-2026-10-21-set-handicap-away-1pt5","event_title":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova","chart_24h":[0.5,0.495,0.555,0.555,0.55,0.495,0.5,0.995,0.9955,1.0]},{"source":"polymarket","id":"5992557","event_id":"1225859","slug":"itf-gramma1-krejco1-2026-10-21-set-handicap-home-1pt5","question":"Set Handicap: Valentini Grammatikopoulou (-1.5) vs Tereza Krejcova (+1.5)","group_item_title":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova Set Handicap +/-1.5","description":"This market refers to the tennis match between Valentini Grammatikopoulou and Tereza Krejcova in the W15 Karlovy Vary, originally scheduled for October 21, 2026 at 5:30AM ET.\nThis market will resolve to \"Valentini Grammatikopoulou\" if Valentini Grammatikopoulou wins by 2 or more sets than Tereza Krejcova, based on the final completed score. Otherwise, it will resolve to \"Tereza Krejcova.\"\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, Valentini Grammatikopoulou can no longer win by 2 or more sets, and this market will resolve to \"Tereza Krejcova.\"\nIf the match is canceled before play begins, or a result has not been determined by November 4, 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":["Valentini Grammatikopoulou","Tereza Krejcova"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.009,"active":false,"closed":true,"start_date":"2026-10-20T20:44:14Z","end_date":"2026-10-28T09:30:00Z","closed_time":"2026-10-21T13:06:02.160425Z","result":"Tereza Krejcova","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":"2026-10-21T13:23:33.912552Z","fetched_at":"2026-10-21T13:23:33.912552Z","added_at":"2026-10-20T20:57:45.194031Z","url":"https://polymarket.com/event/itf-gramma1-krejco1-2026-10-21/itf-gramma1-krejco1-2026-10-21-set-handicap-home-1pt5","event_title":"W15 Karlovy Vary: Valentini Grammatikopoulou vs Tereza Krejcova","chart_24h":[0.5,0.495,0.445,0.44,0.44,0.43,0.695,0.5,0.005,0.0045,0.0]}]}