{"source":"gemini","id":"219731","ticker":"TENNIS-WTAUSO-20260830-MAR8-OST","slug":"tatjana-maria-vs-jelena-ostapenko","title":"Tatjana Maria vs Jelena Ostapenko","description":"Tatjana Maria vs Jelena Ostapenko","image":"https://assets.gemini.com/predictions/images/tennis_test_02_42aacd7e-073f-453c-a9a2-7f09d07bbc38.jpg","icon":null,"active":true,"closed":false,"start_date":"2026-08-28T14:09:40.176000Z","end_date":"2026-09-02T22:00:00Z","closed_time":null,"volume":3910.26,"volume_24hr":3908.73,"volume_24h_change":null,"normalized_vol_24hr":54.123748779296875,"normalized_volume":43.15738296508789,"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":"Jelena Ostapenko","top_outcome_probability":0.85,"top_outcome_prob_24h_change":0.24,"top_outcome_volume_24h_change":null,"updated_at":"2026-09-02T01:35:35.254106Z","fetched_at":"2026-09-02T01:35:35.254106Z","added_at":"2026-08-28T14:25:27.543185Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260830-MAR8-OST/tatjana-maria-vs-jelena-ostapenko","chart_24h":[15.95,56.46,66.5,2302.84,3904.32,3908.73],"kind":"live","markets":[{"source":"gemini","id":"219731-527503","event_id":"219731","slug":"GEMI-TENNIS-WTAUSO-20260830-MAR8-OST-OST","question":"Jelena Ostapenko","group_item_title":"Jelena Ostapenko","description":"This market resolves to Yes if Jelena Ostapenko wins the tennis match between Jelena Ostapenko and Tatjana Maria originally scheduled for August 30, 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/28QBxy8BCI4FQPkchqMovo/10c8b7dd86a487b0039081d5e2e6b96e/032-latvia.png","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.85,0.2],"probability":0.85,"spread":0.05,"active":true,"closed":false,"start_date":"2026-09-01T05:00:00Z","end_date":"2026-09-02T22:00:00Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.24,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-02T01:35:36.091380Z","fetched_at":"2026-09-02T01:35:36.091380Z","added_at":"2026-08-28T14:25:27.775185Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260830-MAR8-OST/tatjana-maria-vs-jelena-ostapenko","event_title":"Tatjana Maria vs Jelena Ostapenko","chart_24h":[0.61,0.61,0.61,0.6,0.61,0.61,0.6,0.6,0.6,0.59,0.58,0.58,0.59,0.58,0.58,0.58,0.6,0.5,0.7,0.52,0.49,0.85]},{"source":"gemini","id":"219731-527502","event_id":"219731","slug":"GEMI-TENNIS-WTAUSO-20260830-MAR8-OST-MAR8","question":"Tatjana Maria","group_item_title":"Tatjana Maria","description":"This market resolves to Yes if Tatjana Maria wins the tennis match between Tatjana Maria and Jelena Ostapenko originally scheduled for August 30, 2026 at 11:00 AM ET. 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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/4B70RAhHCbPNcYPB6XzLHU/ffe9023acbc22204a2d5cd5d2602867d/066-germany.png","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.19,0.86],"probability":0.19,"spread":0.05,"active":true,"closed":false,"start_date":"2026-09-01T05:00:00Z","end_date":"2026-09-02T22:00:00Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.21999999999999997,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-02T01:35:36.091380Z","fetched_at":"2026-09-02T01:35:36.091380Z","added_at":"2026-08-28T14:25:27.775185Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260830-MAR8-OST/tatjana-maria-vs-jelena-ostapenko","event_title":"Tatjana Maria vs Jelena Ostapenko","chart_24h":[0.4,0.4,0.41,0.42,0.43,0.44,0.45,0.44,0.45,0.44,0.44,0.43,0.44,0.51,0.51,0.52,0.53,0.19]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/gemini/219731","as_of":"2026-09-02T01:55:11.570021Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Gemini): \"Tatjana Maria vs Jelena Ostapenko\" — top market at 85% probability across 2 outcomes","source_url":null}}