{"_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/1222740","as_of":"2026-10-21T05:49:44.928791Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"W35 Sydney: Jizelle Sibai vs Erika Sema\" — 3 markets; highest \"\" at 0% as of 2026-10-21 UTC. https://pdata.world/events/polymarket/1222740","source_url":"https://polymarket.com/event/itf-sibai1-sema1-2026-10-21"},"source":"polymarket","id":"1222740","ticker":"itf-sibai1-sema1-2026-10-21","slug":"itf-sibai1-sema1-2026-10-21","title":"W35 Sydney: Jizelle Sibai vs Erika Sema","description":"This market refers to the tennis match between Jizelle Sibai and Erika Sema in the W35 Sydney, Main Draw, originally scheduled for October 20, 2026 at 8:00PM ET.\n\nThis market will resolve to 'Jizelle Sibai' if Jizelle Sibai advances against Erika Sema.\n\nThis market will resolve to 'Erika Sema' if Erika Sema advances against Jizelle Sibai.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 3, 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":true,"closed":false,"start_date":"2026-10-20T08:14:15Z","end_date":"2026-10-28T00:00:00Z","closed_time":null,"volume":8496.387634,"volume_24hr":8496.387634,"volume_24h_change":null,"normalized_vol_24hr":31.834264755249023,"normalized_volume":18.593074798583984,"liquidity":34925.42013,"open_interest":3030.75967,"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":0.0005,"top_outcome_prob_24h_change":-0.5145000000000001,"top_outcome_volume_24h_change":8496.387634,"updated_at":"2026-10-21T05:44:50.418464Z","fetched_at":"2026-10-21T05:44:50.418464Z","added_at":"2026-10-20T08:19:57.615463Z","url":"https://polymarket.com/event/itf-sibai1-sema1-2026-10-21","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,65.518519,137.518519,489.214883,489.214883,489.214883,489.214883,489.214883,489.214883,494.214883,494.214883,499.714883,499.714883,499.714883,499.714883,541.62905,541.62905,541.62905,546.62905,2116.023139,6063.925813000001,7627.727354000001,8455.377633999999,8470.377634,8496.387634],"kind":"live","mutually_exclusive":false,"markets_total":3,"markets":[{"source":"polymarket","id":"5965655","event_id":"1222740","slug":"itf-sibai1-sema1-2026-10-21","question":"W35 Sydney: Jizelle Sibai vs Erika Sema","group_item_title":null,"description":"This market refers to the tennis match between Jizelle Sibai and Erika Sema in the W35 Sydney, Main Draw, originally scheduled for October 20, 2026 at 8:00PM ET.\n\nThis market will resolve to 'Jizelle Sibai' if Jizelle Sibai advances against Erika Sema.\n\nThis market will resolve to 'Erika Sema' if Erika Sema advances against Jizelle Sibai.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 3, 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":["Jizelle Sibai","Erika Sema"],"outcome_prices":[0.0005,0.9995],"probability":0.0005,"spread":0.001,"active":true,"closed":false,"start_date":"2026-10-20T08:14:15Z","end_date":"2026-10-28T00:00:00Z","closed_time":null,"result":null,"volume":8496.387634,"volume_24hr":8496.387634,"prob_24h_change":-0.5145000000000001,"volume_24h_change":8496.387634,"normalized_vol_24hr":33.13606262207031,"normalized_volume":24.016334533691406,"liquidity":34925.42013,"categories":["Sports"],"countries":[],"updated_at":"2026-10-21T05:44:50.467252Z","fetched_at":"2026-10-21T05:44:50.467252Z","added_at":"2026-10-20T08:19:57.687064Z","url":"https://polymarket.com/event/itf-sibai1-sema1-2026-10-21/itf-sibai1-sema1-2026-10-21","event_title":"W35 Sydney: Jizelle Sibai vs Erika Sema","chart_24h":[0.515,0.525,0.53,0.535,0.535,0.535,0.54,0.53,0.535,0.535,0.545,0.535,0.525,0.525,0.22,0.175,0.69,0.29,0.0005,0.0005,0.0005]},{"source":"polymarket","id":"5965823","event_id":"1222740","slug":"itf-sibai1-sema1-2026-10-21-set-handicap-home-1pt5","question":"Set Handicap: Jizelle Sibai (-1.5) vs Erika Sema (+1.5)","group_item_title":"W35 Sydney: Jizelle Sibai vs Erika Sema Set Handicap +/-1.5","description":"This market refers to the tennis match between Jizelle Sibai and Erika Sema in the W35 Sydney, originally scheduled for October 20, 2026 at 8:00PM ET.\nThis market will resolve to \"Jizelle Sibai\" if Jizelle Sibai wins by 2 or more sets than Erika Sema, based on the final completed score. Otherwise, it will resolve to \"Erika Sema.\"\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, Jizelle Sibai can no longer win by 2 or more sets, and this market will resolve to \"Erika Sema.\"\nIf the match is canceled before play begins, or a result has not been determined by November 3, 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":["Jizelle Sibai","Erika Sema"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-10-20T08:44:13Z","end_date":"2026-10-28T00:00:00Z","closed_time":"2026-10-21T03:29:00.168452Z","result":"Erika Sema","volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.63,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-10-21T03:34:44.292099Z","fetched_at":"2026-10-21T03:34:44.292099Z","added_at":"2026-10-20T09:04:10.387648Z","url":"https://polymarket.com/event/itf-sibai1-sema1-2026-10-21/itf-sibai1-sema1-2026-10-21-set-handicap-home-1pt5","event_title":"W35 Sydney: Jizelle Sibai vs Erika Sema","chart_24h":[0.63,0.635,0.645,0.645,0.645,0.65,0.645,0.645,0.655,0.65,0.66,0.495,0.5,0.0045,0.048,0.0]},{"source":"polymarket","id":"5965828","event_id":"1222740","slug":"itf-sibai1-sema1-2026-10-21-set-handicap-away-1pt5","question":"Set Handicap: Erika Sema (-1.5) vs Jizelle Sibai (+1.5)","group_item_title":"W35 Sydney: Jizelle Sibai vs Erika Sema Set Handicap +/-1.5","description":"This market refers to the tennis match between Erika Sema and Jizelle Sibai in the W35 Sydney, originally scheduled for October 20, 2026 at 8:00PM ET.\nThis market will resolve to \"Erika Sema\" if Erika Sema wins by 2 or more sets than Jizelle Sibai, based on the final completed score. Otherwise, it will resolve to \"Jizelle Sibai.\"\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, Erika Sema can no longer win by 2 or more sets, and this market will resolve to \"Jizelle Sibai.\"\nIf the match is canceled before play begins, or a result has not been determined by November 3, 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":["Erika Sema","Jizelle Sibai"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.001,"active":false,"closed":true,"start_date":"2026-10-20T08:44:12Z","end_date":"2026-10-28T00:00:00Z","closed_time":"2026-10-21T04:33:22.195885Z","result":"Jizelle Sibai","volume":0.0,"volume_24hr":0.0,"prob_24h_change":-0.615,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":0.0,"categories":["Sports"],"countries":[],"updated_at":"2026-10-21T04:39:57.139314Z","fetched_at":"2026-10-21T04:39:57.139314Z","added_at":"2026-10-20T09:04:10.387648Z","url":"https://polymarket.com/event/itf-sibai1-sema1-2026-10-21/itf-sibai1-sema1-2026-10-21-set-handicap-away-1pt5","event_title":"W35 Sydney: Jizelle Sibai vs Erika Sema","chart_24h":[0.615,0.62,0.63,0.63,0.62,0.625,0.62,0.62,0.63,0.625,0.635,0.495,0.5,0.0845,0.0415,0.0005,0.0]}]}