{"_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-26OCT23STOSIN-1","as_of":"2026-10-23T09:19:15.502621Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Mary Stoiana vs Katerina Siniakova: Set 1 Winner\" — resolved: \"Katerina Siniakova\" (closed 2026-10-23). https://pdata.world/events/kalshi/KXWTASETWINNER-26OCT23STOSIN-1","source_url":"https://kalshi.com/markets/kxwtasetwinner/mary-stoiana-vs-katerina-siniakova-set-1-winner/kxwtasetwinner-26oct23stosin-1"},"source":"kalshi","id":"KXWTASETWINNER-26OCT23STOSIN-1","ticker":"KXWTASETWINNER-26OCT23STOSIN-1","slug":"KXWTASETWINNER-26OCT23STOSIN-1","title":"Mary Stoiana vs Katerina Siniakova: Set 1 Winner","description":null,"image":null,"icon":null,"active":false,"closed":true,"start_date":"2026-10-22T09:20:00Z","end_date":"2026-11-06T04:50:00Z","closed_time":"2026-10-23T07:05:47Z","volume":28193.08,"volume_24hr":28193.08,"volume_24h_change":null,"normalized_vol_24hr":30.746231079101562,"normalized_volume":28.1322021484375,"liquidity":null,"open_interest":17962.260000000002,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26OCT23STOSIN-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":11295.51,"updated_at":"2026-10-23T07:18:33.992235Z","fetched_at":"2026-10-23T07:18:33.992235Z","added_at":"2026-10-22T09:21:50.890033Z","url":"https://kalshi.com/markets/kxwtasetwinner/mary-stoiana-vs-katerina-siniakova-set-1-winner/kxwtasetwinner-26oct23stosin-1","chart_24h":[0.0,51.0,61.0,402.22,520.22,1020.13,2767.5,10656.36,28193.08],"kind":"live","mutually_exclusive":true,"markets_total":2,"markets":[{"source":"kalshi","id":"KXWTASETWINNER-26OCT23STOSIN-1-SIN","event_id":"KXWTASETWINNER-26OCT23STOSIN-1","slug":"KXWTASETWINNER-26OCT23STOSIN-1-SIN","question":"Will Katerina Siniakova win set 1 in the Mary Stoiana vs Katerina Siniakova match","group_item_title":"Katerina Siniakova","description":"If Katerina Siniakova wins set 1 in the Mary Stoiana vs Katerina Siniakova professional tennis match in the 2026 WTA Osaka Quarterfinal, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Mary Stoiana vs Katerina Siniakova professional tennis match in the 2026 WTA Osaka Quarterfinal. 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":"2026-10-22T09:20:00Z","end_date":"2026-11-06T04:50:00Z","closed_time":"2026-10-23T07:05:47Z","result":"yes","volume":11295.51,"volume_24hr":11295.51,"prob_24h_change":0.99,"volume_24h_change":11295.51,"normalized_vol_24hr":29.08014678955078,"normalized_volume":27.111406326293945,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-10-23T07:18:34.000666Z","fetched_at":"2026-10-23T07:18:34.000666Z","added_at":"2026-10-22T09:21:51.032861Z","url":"https://kalshi.com/markets/kxwtasetwinner/mary-stoiana-vs-katerina-siniakova-set-1-winner/kxwtasetwinner-26oct23stosin-1","event_title":"Mary Stoiana vs Katerina Siniakova: Set 1 Winner","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.66,0.66,0.66,0.67,0.67,0.67,0.67,0.67,0.94,0.99]},{"source":"kalshi","id":"KXWTASETWINNER-26OCT23STOSIN-1-STO","event_id":"KXWTASETWINNER-26OCT23STOSIN-1","slug":"KXWTASETWINNER-26OCT23STOSIN-1-STO","question":"Will Mary Stoiana win set 1 in the Mary Stoiana vs Katerina Siniakova match","group_item_title":"Mary Stoiana","description":"If Mary Stoiana wins set 1 in the Mary Stoiana vs Katerina Siniakova professional tennis match in the 2026 WTA Osaka Quarterfinal, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Mary Stoiana vs Katerina Siniakova professional tennis match in the 2026 WTA Osaka Quarterfinal. 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":"2026-10-22T09:20:00Z","end_date":"2026-11-06T04:50:00Z","closed_time":"2026-10-23T07:05:47Z","result":"no","volume":16897.57,"volume_24hr":16897.57,"prob_24h_change":0.01,"volume_24h_change":16897.57,"normalized_vol_24hr":31.64422607421875,"normalized_volume":29.501893997192383,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-10-23T07:18:34.000666Z","fetched_at":"2026-10-23T07:18:34.000666Z","added_at":"2026-10-22T09:21:51.032861Z","url":"https://kalshi.com/markets/kxwtasetwinner/mary-stoiana-vs-katerina-siniakova-set-1-winner/kxwtasetwinner-26oct23stosin-1","event_title":"Mary Stoiana vs Katerina Siniakova: Set 1 Winner","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.35,0.35,0.36,0.06,0.01]}]}