{"_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/kalshi/KXWTASETWINNER-26OCT18SINSTE-1","as_of":"2026-10-20T11:41:52.226953Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Katerina Siniakova vs Peyton Stearns: Set 1 Winner\" — resolved: \"Katerina Siniakova\" (closed 2026-10-20). https://pdata.world/events/kalshi/KXWTASETWINNER-26OCT18SINSTE-1","source_url":"https://kalshi.com/markets/kxwtasetwinner/katerina-siniakova-vs-peyton-stearns-set-1-winner/kxwtasetwinner-26oct18sinste-1"},"source":"kalshi","id":"KXWTASETWINNER-26OCT18SINSTE-1","ticker":"KXWTASETWINNER-26OCT18SINSTE-1","slug":"KXWTASETWINNER-26OCT18SINSTE-1","title":"Katerina Siniakova vs Peyton Stearns: Set 1 Winner","description":null,"image":null,"icon":null,"active":false,"closed":true,"start_date":"2026-10-18T02:50:00Z","end_date":"2026-11-02T02:30:00Z","closed_time":"2026-10-20T09:07:31Z","volume":26837.12,"volume_24hr":26837.12,"volume_24h_change":null,"normalized_vol_24hr":29.474538803100586,"normalized_volume":27.881675720214844,"liquidity":null,"open_interest":20833.11,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26OCT18SINSTE-1","parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Katerina Siniakova","top_outcome_probability":0.99,"top_outcome_prob_24h_change":0.99,"top_outcome_volume_24h_change":11919.8,"updated_at":"2026-10-20T09:15:20.365020Z","fetched_at":"2026-10-20T09:15:20.365020Z","added_at":"2026-10-18T02:56:04.158483Z","url":"https://kalshi.com/markets/kxwtasetwinner/katerina-siniakova-vs-peyton-stearns-set-1-winner/kxwtasetwinner-26oct18sinste-1","chart_24h":[20.0,20.02,97.68,246.66,4168.65,26837.12],"kind":"live","mutually_exclusive":true,"markets_total":2,"markets":[{"source":"kalshi","id":"KXWTASETWINNER-26OCT18SINSTE-1-SIN","event_id":"KXWTASETWINNER-26OCT18SINSTE-1","slug":"KXWTASETWINNER-26OCT18SINSTE-1-SIN","question":"Will Katerina Siniakova win set 1 in the Katerina Siniakova vs Peyton Stearns match","group_item_title":"Katerina Siniakova","description":"If Katerina Siniakova wins set 1 in the Katerina Siniakova vs Peyton Stearns professional tennis match in the 2026 WTA Osaka Round Of 32, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Katerina Siniakova vs Peyton Stearns professional tennis match in the 2026 WTA Osaka Round Of 32. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks). If a retirement occurs, all markets that can be unconditionally settled based on play already completed will resolve accordingly. Any markets that cannot be unconditionally settled will resolve to Fair Market Price, as determined at the sole discretion of the Exchange.\n\nKalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.99,0.010000000000000009],"probability":0.99,"spread":1.0,"active":false,"closed":true,"start_date":"2026-10-18T02:50:00Z","end_date":"2026-11-02T02:30:00Z","closed_time":"2026-10-20T09:07:31Z","result":"yes","volume":11919.8,"volume_24hr":11919.8,"prob_24h_change":0.99,"volume_24h_change":11919.8,"normalized_vol_24hr":28.03871726989746,"normalized_volume":27.42484474182129,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-10-20T09:15:20.372863Z","fetched_at":"2026-10-20T09:15:20.372863Z","added_at":"2026-10-18T02:56:04.384905Z","url":"https://kalshi.com/markets/kxwtasetwinner/katerina-siniakova-vs-peyton-stearns-set-1-winner/kxwtasetwinner-26oct18sinste-1","event_title":"Katerina Siniakova vs Peyton Stearns: Set 1 Winner","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.56,0.57,0.84,0.99]},{"source":"kalshi","id":"KXWTASETWINNER-26OCT18SINSTE-1-STE","event_id":"KXWTASETWINNER-26OCT18SINSTE-1","slug":"KXWTASETWINNER-26OCT18SINSTE-1-STE","question":"Will Peyton Stearns win set 1 in the Katerina Siniakova vs Peyton Stearns match","group_item_title":"Peyton Stearns","description":"If Peyton Stearns wins set 1 in the Katerina Siniakova vs Peyton Stearns professional tennis match in the 2026 WTA Osaka Round Of 32, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Katerina Siniakova vs Peyton Stearns professional tennis match in the 2026 WTA Osaka Round Of 32. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks). If a retirement occurs, all markets that can be unconditionally settled based on play already completed will resolve accordingly. Any markets that cannot be unconditionally settled will resolve to Fair Market Price, as determined at the sole discretion of the Exchange.\n\nKalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":1.0,"active":false,"closed":true,"start_date":"2026-10-18T02:50:00Z","end_date":"2026-11-02T02:30:00Z","closed_time":"2026-10-20T09:07:31Z","result":"no","volume":14917.32,"volume_24hr":14917.32,"prob_24h_change":0.01,"volume_24h_change":14917.32,"normalized_vol_24hr":29.394853591918945,"normalized_volume":28.751291275024414,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-10-20T09:15:20.372863Z","fetched_at":"2026-10-20T09:15:20.372863Z","added_at":"2026-10-18T02:56:04.384905Z","url":"https://kalshi.com/markets/kxwtasetwinner/katerina-siniakova-vs-peyton-stearns-set-1-winner/kxwtasetwinner-26oct18sinste-1","event_title":"Katerina Siniakova vs Peyton Stearns: Set 1 Winner","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.47,0.47,0.47,0.47,0.42,0.18,0.01]}]}