{"source":"gemini","id":"221615","ticker":"TENNIS-WTAUSO-20260831-SAK-MON5","slug":"maria-sakkari-vs-robin-montgomery","title":"Maria Sakkari vs Robin Montgomery","description":"Maria Sakkari vs Robin Montgomery","image":"https://assets.gemini.com/predictions/images/tennis_test_02_42aacd7e-073f-453c-a9a2-7f09d07bbc38.jpg","icon":null,"active":true,"closed":false,"start_date":"2026-08-29T15:17:58.387000Z","end_date":"2026-09-02T18:45:00Z","closed_time":null,"volume":2604.17,"volume_24hr":2602.5,"volume_24h_change":null,"normalized_vol_24hr":48.93312454223633,"normalized_volume":39.02113342285156,"liquidity":null,"open_interest":null,"categories":["Sports"],"tags":["US Open"],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Maria Sakkari","top_outcome_probability":0.6,"top_outcome_prob_24h_change":0.010000000000000009,"top_outcome_volume_24h_change":null,"updated_at":"2026-09-01T16:59:56.397523Z","fetched_at":"2026-09-01T16:59:56.397523Z","added_at":"2026-08-29T15:40:13.067658Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260831-SAK-MON5/maria-sakkari-vs-robin-montgomery","chart_24h":[0.0,21.4,31.43,42.85,265.78,615.06,616.23,662.24,2115.01,2586.3,2602.5],"kind":"live","markets":[{"source":"gemini","id":"221615-531874","event_id":"221615","slug":"GEMI-TENNIS-WTAUSO-20260831-SAK-MON5-SAK","question":"Maria Sakkari","group_item_title":"Maria Sakkari","description":"This market resolves to Yes if Maria Sakkari wins the tennis match between Maria Sakkari and Robin Montgomery originally scheduled for August 31, 2026 at 11:00 AM ET. Otherwise, it will resolve to No. The Underlying is the official result of the specified sporting event. Source Agencies, in order, are the tournament governing body (ATP, WTA, ITF), ESPN, Fox Sports, and the broadcast partner of the event. If the Expiration Value cannot be determined on the Expiration Date (including because the event is cancelled or a player forfeits, withdraws, or is disqualified), the Exchange may determine payouts pursuant to the Market Outcome Review Process. View the [full rules](https://assets.gemini.com/predictions/terms_and_conditions/Sporting_Win_Lose_Event_2_Terms_and_Conditions_f232ede2-4e1a-4126-a1d7-89e0fa2225e2.pdf)","image":"https://images.ctfassets.net/jg6lo9a2ukvr/RmB8CVNoL5XTCjN79yfIs/5fa1839972324ff480f9df0cd3865b8f/071-greece.png","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.6,0.43],"probability":0.6,"spread":0.03,"active":true,"closed":false,"start_date":"2026-09-01T05:00:00Z","end_date":"2026-09-02T17:30:00Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.010000000000000009,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-01T16:59:56.693172Z","fetched_at":"2026-09-01T16:59:56.693172Z","added_at":"2026-08-29T15:40:13.331705Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260831-SAK-MON5/maria-sakkari-vs-robin-montgomery","event_title":"Maria Sakkari vs Robin Montgomery","chart_24h":[0.59,0.59,0.59,0.59,0.58,0.59,0.6,0.61,0.61,0.6,0.6,0.6,0.6]},{"source":"gemini","id":"221615-531875","event_id":"221615","slug":"GEMI-TENNIS-WTAUSO-20260831-SAK-MON5-MON5","question":"Robin Montgomery","group_item_title":"Robin Montgomery","description":"This market resolves to Yes if Robin Montgomery wins the tennis match between Robin Montgomery and Maria Sakkari originally scheduled for August 31, 2026 at 11:00 AM ET. Otherwise, it will resolve to No. The Underlying is the official result of the specified sporting event. Source Agencies, in order, are the tournament governing body (ATP, WTA, ITF), ESPN, Fox Sports, and the broadcast partner of the event. If the Expiration Value cannot be determined on the Expiration Date (including because the event is cancelled or a player forfeits, withdraws, or is disqualified), the Exchange may determine payouts pursuant to the Market Outcome Review Process. View the [full rules](https://assets.gemini.com/predictions/terms_and_conditions/Sporting_Win_Lose_Event_2_Terms_and_Conditions_f232ede2-4e1a-4126-a1d7-89e0fa2225e2.pdf)","image":"https://images.ctfassets.net/jg6lo9a2ukvr/enO9xnfkxGSdWrMuQ8f5I/4c82ff835d421bbc99f0e320a08f2088/153-united-states-of-america.png","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.44,0.6],"probability":0.44,"spread":0.04,"active":true,"closed":false,"start_date":"2026-09-01T05:00:00Z","end_date":"2026-09-02T18:45:00Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.010000000000000009,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-01T17:41:10.083537Z","fetched_at":"2026-09-01T17:41:10.083537Z","added_at":"2026-08-29T15:40:13.331705Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260831-SAK-MON5/maria-sakkari-vs-robin-montgomery","event_title":"Maria Sakkari vs Robin Montgomery","chart_24h":[0.43,0.43,0.43,0.42,0.42,0.42,0.42,0.41,0.41,0.41,0.41,0.44,0.43,0.44,0.43]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/gemini/221615","as_of":"2026-09-01T17:45:37.014176Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Gemini): \"Maria Sakkari vs Robin Montgomery\" — top market at 60% probability across 2 outcomes","source_url":null}}