{"_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/1261526","as_of":"2026-10-27T10:23:30.626330Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Polymarket): \"W15 Essen: Arina Kostina vs Salma Djoubri\" — 3 markets; highest \"W15 Essen: Arina Kostina vs Salma Djoubri Set Handicap +/-1.5\" at 56% as of 2026-10-27 UTC. https://pdata.world/events/polymarket/1261526","source_url":"https://polymarket.com/event/itf-kostin1-djoubr1-2026-10-27"},"source":"polymarket","id":"1261526","ticker":"itf-kostin1-djoubr1-2026-10-27","slug":"itf-kostin1-djoubr1-2026-10-27","title":"W15 Essen: Arina Kostina vs Salma Djoubri","description":"This market refers to the tennis match between Arina Kostina and Salma Djoubri in the W15 Essen, Main Draw, originally scheduled for October 27, 2026 at 9:00AM ET.\n\nThis market will resolve to 'Arina Kostina' if Arina Kostina advances against Salma Djoubri.\n\nThis market will resolve to 'Salma Djoubri' if Salma Djoubri advances against Arina Kostina.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 10, 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":"2026-10-26T20:14:17Z","end_date":"2026-11-03T13:00:00Z","closed_time":null,"volume":7263.764603999998,"volume_24hr":7263.764603999999,"volume_24h_change":null,"normalized_vol_24hr":25.77092933654785,"normalized_volume":17.626436233520508,"liquidity":11297.8227,"open_interest":6595.654635,"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 Essen: Arina Kostina vs Salma Djoubri Set Handicap +/-1.5","top_outcome_probability":0.555,"top_outcome_prob_24h_change":0.06000000000000005,"top_outcome_volume_24h_change":0.0,"updated_at":"2026-10-27T10:20:58.634363Z","fetched_at":"2026-10-27T10:20:58.634363Z","added_at":"2026-10-26T20:18:14.972679Z","url":"https://polymarket.com/event/itf-kostin1-djoubr1-2026-10-27","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,1033.5294319999994,2268.1522209999994,3309.090931999999,3448.340931999999,6699.566651],"kind":"live","mutually_exclusive":false,"markets_total":3,"markets":[{"source":"polymarket","id":"6264207","event_id":"1261526","slug":"itf-kostin1-djoubr1-2026-10-27","question":"W15 Essen: Arina Kostina vs Salma Djoubri","group_item_title":null,"description":"This market refers to the tennis match between Arina Kostina and Salma Djoubri in the W15 Essen, Main Draw, originally scheduled for October 27, 2026 at 9:00AM ET.\n\nThis market will resolve to 'Arina Kostina' if Arina Kostina advances against Salma Djoubri.\n\nThis market will resolve to 'Salma Djoubri' if Salma Djoubri advances against Arina Kostina.\n\nIf the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 10, 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":["Arina Kostina","Salma Djoubri"],"outcome_prices":[0.205,0.795],"probability":0.205,"spread":0.03,"active":true,"closed":false,"start_date":"2026-10-26T20:14:17Z","end_date":"2026-11-03T13:00:00Z","closed_time":null,"result":null,"volume":7263.764603999998,"volume_24hr":7263.764603999999,"prob_24h_change":-0.3500000000000001,"volume_24h_change":7175.047168000001,"normalized_vol_24hr":31.658771514892578,"normalized_volume":22.77166748046875,"liquidity":9338.5015,"categories":["Sports"],"countries":[],"updated_at":"2026-10-27T10:20:58.807603Z","fetched_at":"2026-10-27T10:20:58.807603Z","added_at":"2026-10-26T20:18:15.057124Z","url":"https://polymarket.com/event/itf-kostin1-djoubr1-2026-10-27/itf-kostin1-djoubr1-2026-10-27","event_title":"W15 Essen: Arina Kostina vs Salma Djoubri","chart_24h":[0.555,0.21,0.185,0.215,0.245,0.23,0.235,0.235,0.22,0.215]},{"source":"polymarket","id":"6265015","event_id":"1261526","slug":"itf-kostin1-djoubr1-2026-10-27-set-handicap-away-1pt5","question":"Set Handicap: Salma Djoubri (-1.5) vs Arina Kostina (+1.5)","group_item_title":"W15 Essen: Arina Kostina vs Salma Djoubri Set Handicap +/-1.5","description":"This market refers to the tennis match between Salma Djoubri and Arina Kostina in the W15 Essen, originally scheduled for October 27, 2026 at 9:00AM ET.\nThis market will resolve to \"Salma Djoubri\" if Salma Djoubri wins by 2 or more sets than Arina Kostina, based on the final completed score. Otherwise, it will resolve to \"Arina Kostina.\"\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, Salma Djoubri can no longer win by 2 or more sets, and this market will resolve to \"Arina Kostina.\"\nIf the match is canceled before play begins, or a result has not been determined by November 10, 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":["Salma Djoubri","Arina Kostina"],"outcome_prices":[0.555,0.445],"probability":0.555,"spread":0.03,"active":true,"closed":false,"start_date":"2026-10-26T20:44:14Z","end_date":"2026-11-03T13:00:00Z","closed_time":null,"result":null,"volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.06000000000000005,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":1816.2533,"categories":["Sports"],"countries":[],"updated_at":"2026-10-27T09:32:53.394684Z","fetched_at":"2026-10-27T09:32:53.394684Z","added_at":"2026-10-26T21:05:59.935499Z","url":"https://polymarket.com/event/itf-kostin1-djoubr1-2026-10-27/itf-kostin1-djoubr1-2026-10-27-set-handicap-away-1pt5","event_title":"W15 Essen: Arina Kostina vs Salma Djoubri","chart_24h":[0.495,0.485,0.535,0.535,0.535,0.535,0.535,0.53,0.525,0.52,0.555]},{"source":"polymarket","id":"6265012","event_id":"1261526","slug":"itf-kostin1-djoubr1-2026-10-27-set-handicap-home-1pt5","question":"Set Handicap: Arina Kostina (-1.5) vs Salma Djoubri (+1.5)","group_item_title":"W15 Essen: Arina Kostina vs Salma Djoubri Set Handicap +/-1.5","description":"This market refers to the tennis match between Arina Kostina and Salma Djoubri in the W15 Essen, originally scheduled for October 27, 2026 at 9:00AM ET.\nThis market will resolve to \"Arina Kostina\" if Arina Kostina wins by 2 or more sets than Salma Djoubri, based on the final completed score. Otherwise, it will resolve to \"Salma Djoubri.\"\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, Arina Kostina can no longer win by 2 or more sets, and this market will resolve to \"Salma Djoubri.\"\nIf the match is canceled before play begins, or a result has not been determined by November 10, 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":["Arina Kostina","Salma Djoubri"],"outcome_prices":[0.495,0.505],"probability":0.495,"spread":0.89,"active":true,"closed":false,"start_date":"2026-10-26T20:44:14Z","end_date":"2026-11-03T13:00:00Z","closed_time":null,"result":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":101.9595,"categories":["Sports"],"countries":[],"updated_at":"2026-10-27T10:20:58.807603Z","fetched_at":"2026-10-27T10:20:58.807603Z","added_at":"2026-10-26T21:05:59.935499Z","url":"https://polymarket.com/event/itf-kostin1-djoubr1-2026-10-27/itf-kostin1-djoubr1-2026-10-27-set-handicap-home-1pt5","event_title":"W15 Essen: Arina Kostina vs Salma Djoubri","chart_24h":[0.495,0.5,0.525,0.52,0.545,0.515,0.5,0.525,0.525,0.535,0.535,0.51]}]}