{"source":"predict","id":"320478","ticker":"320478","slug":"wta-kostyuk-stephen-2026-08-18","title":"Cincinnati Open: Marta Kostyuk vs Sloane Stephens","description":"This market refers to the tennis match between Marta Kostyuk and Sloane Stephens in the Cincinnati Open, originally scheduled for August 18, 2026 at 10:00AM ET.\n\nThis market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Sloane Stephens.\n\nThis market will resolve to 'Sloane Stephens' if Sloane Stephens advances against Marta Kostyuk.\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 WTA Tour. A consensus of credible reporting may also be used.","image":"https://static.predict.fun/tennis","icon":null,"active":false,"closed":true,"start_date":"2026-08-18T14:00:00Z","end_date":"2026-08-18T18:00:00Z","closed_time":"2026-08-18T22:36:14.047523Z","volume":2301.79,"volume_24hr":2290.3,"volume_24h_change":null,"normalized_vol_24hr":32.713958740234375,"normalized_volume":19.92251968383789,"liquidity":null,"open_interest":null,"categories":["Sports"],"tags":["Sports","Tennis"],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Cincinnati Open: Marta Kostyuk vs Sloane Stephens","top_outcome_probability":1.0,"top_outcome_prob_24h_change":0.135,"top_outcome_volume_24h_change":2278.8100000000004,"updated_at":"2026-08-18T23:53:43.807177Z","fetched_at":"2026-08-18T22:36:07.162761Z","added_at":"2026-08-17T04:58:54.316317Z","url":"https://predict.fun/market/wta-kostyuk-stephen-2026-08-18","chart_24h":[11.49,11.49,11.49,11.49,11.49,34.48,34.48,34.48,34.48,36.78,37.93,39.08,53.03,49.58,405.23,1075.76,2290.3],"markets":[{"source":"predict","id":"1453791","event_id":"320478","slug":"wta-kostyuk-stephen-2026-08-18","question":"Cincinnati Open: Marta Kostyuk vs Sloane Stephens","group_item_title":"Cincinnati Open: Marta Kostyuk vs Sloane Stephens","description":"This market refers to the tennis match between Marta Kostyuk and Sloane Stephens in the Cincinnati Open, originally scheduled for August 18, 2026 at 10:00AM ET.\n\nThis market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Sloane Stephens.\n\nThis market will resolve to 'Sloane Stephens' if Sloane Stephens advances against Marta Kostyuk.\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 WTA Tour. A consensus of credible reporting may also be used.","image":"https://static.predict.fun/tennis","icon":null,"outcomes":["KOSTYUK","STEPHEN"],"outcome_prices":[1.0,0.0],"probability":1.0,"spread":0.01,"active":false,"closed":true,"start_date":"2026-08-17T04:15:20.639000Z","end_date":"2026-08-18T18:00:00Z","closed_time":"2026-08-18T22:36:14.068522Z","volume":2301.79,"volume_24hr":2290.3,"prob_24h_change":0.135,"volume_24h_change":2278.8100000000004,"normalized_vol_24hr":38.96514892578125,"normalized_volume":19.92251968383789,"liquidity":4935.61,"categories":["Sports"],"countries":[],"updated_at":"2026-08-18T23:54:10.850290Z","fetched_at":"2026-08-18T22:36:07.196584Z","added_at":"2026-08-17T04:58:54.363491Z","url":"https://predict.fun/market/wta-kostyuk-stephen-2026-08-18","event_title":"Cincinnati Open: Marta Kostyuk vs Sloane Stephens","chart_24h":[0.865,0.865,0.865,0.865,0.865,0.865,0.865,0.865,0.865,0.865,0.865,0.865,0.865,0.855,0.805,0.01,1.0,1.0]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/predict/320478","as_of":"2026-08-19T00:30:40.124417Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Predict): \"Cincinnati Open: Marta Kostyuk vs Sloane Stephens\" — top market at 100% probability across 1 outcome","source_url":null}}