{"source":"gemini","id":"219760","ticker":"TENNIS-WTAUSO-20260830-BIR2-MAR9","slug":"kimberly-birrell-vs-petra-marcinko","title":"Kimberly Birrell vs Petra Marcinko","description":"Kimberly Birrell vs Petra Marcinko","image":"https://assets.gemini.com/predictions/images/tennis_test_02_42aacd7e-073f-453c-a9a2-7f09d07bbc38.jpg","icon":null,"active":true,"closed":false,"start_date":"2026-08-28T14:11:59.824000Z","end_date":"2026-08-31T10:15:00Z","closed_time":null,"volume":6096.5,"volume_24hr":5504.96,"volume_24h_change":null,"normalized_vol_24hr":58.69706344604492,"normalized_volume":47.91510772705078,"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":"Petra Marcinko","top_outcome_probability":0.79,"top_outcome_prob_24h_change":0.29000000000000004,"top_outcome_volume_24h_change":null,"updated_at":"2026-08-31T01:32:17.270136Z","fetched_at":"2026-08-31T01:32:17.270136Z","added_at":"2026-08-28T14:25:27.543185Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260830-BIR2-MAR9/kimberly-birrell-vs-petra-marcinko","chart_24h":[179.4,179.4,189.44,10.04,3117.0,4216.0,4398.0,5504.96],"kind":"live","markets":[{"source":"gemini","id":"219760-527553","event_id":"219760","slug":"GEMI-TENNIS-WTAUSO-20260830-BIR2-MAR9-MAR9","question":"Petra Marcinko","group_item_title":"Petra Marcinko","description":"This market resolves to Yes if Petra Marcinko wins the tennis match between Petra Marcinko and Kimberly Birrell 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/7rTV7ymGFJNgjEHwgcgp39/694cc52d36845678cdd66070a461a2d6/134-croatia.png","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.79,0.28],"probability":0.79,"spread":0.07,"active":true,"closed":false,"start_date":"2026-08-30T05:00:00Z","end_date":"2026-08-31T10:15:00Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.29000000000000004,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-31T02:53:52.901808Z","fetched_at":"2026-08-31T02:53:52.901808Z","added_at":"2026-08-28T14:25:27.775185Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260830-BIR2-MAR9/kimberly-birrell-vs-petra-marcinko","event_title":"Kimberly Birrell vs Petra Marcinko","chart_24h":[0.5,0.48,0.77,0.65,0.76,0.8,0.75,0.77,0.79]},{"source":"gemini","id":"219760-527552","event_id":"219760","slug":"GEMI-TENNIS-WTAUSO-20260830-BIR2-MAR9-BIR2","question":"Kimberly Birrell","group_item_title":"Kimberly Birrell","description":"This market resolves to Yes if Kimberly Birrell wins the tennis match between Kimberly Birrell and Petra Marcinko 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/6WWPiPCkPv8rsJD22oysSO/45d53deab0a369ac1c746e79993a2d8f/130-australia.png","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.28,0.79],"probability":0.28,"spread":0.07,"active":true,"closed":false,"start_date":"2026-08-30T05:00:00Z","end_date":"2026-08-31T10:15:00Z","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":"2026-08-31T02:53:52.901808Z","fetched_at":"2026-08-31T02:53:52.901808Z","added_at":"2026-08-28T14:25:27.775185Z","url":"https://www.gemini.com/predictions/TENNIS-WTAUSO-20260830-BIR2-MAR9/kimberly-birrell-vs-petra-marcinko","event_title":"Kimberly Birrell vs Petra Marcinko","chart_24h":[0.52,0.54,0.26,0.4,0.3,0.27,0.29,0.3,0.28]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/gemini/219760","as_of":"2026-08-31T03:21:10.443211Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Gemini): \"Kimberly Birrell vs Petra Marcinko\" — top market at 79% probability across 2 outcomes","source_url":null}}