{"source":"gemini","id":"192497","ticker":"TENNIS-WTACIN-20260813-WAL3-MAR9","slug":"simona-waltert-vs-petra-marcinko","title":"Simona Waltert vs Petra Marcinko","description":"Simona Waltert vs Petra Marcinko","image":"https://assets.gemini.com/predictions/images/tennis_test_02_42aacd7e-073f-453c-a9a2-7f09d07bbc38.jpg","icon":null,"active":false,"closed":true,"start_date":"2026-08-13T12:05:23.089000Z","end_date":"2026-08-14T03:00:00Z","closed_time":"2026-08-13T17:43:02.893000Z","volume":3127.94,"volume_24hr":3127.94,"volume_24h_change":null,"normalized_vol_24hr":46.6485481262207,"normalized_volume":42.58645248413086,"liquidity":null,"open_interest":null,"categories":["Sports"],"tags":["WTA"],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Simona Waltert","top_outcome_probability":1.0,"top_outcome_prob_24h_change":0.52,"top_outcome_volume_24h_change":null,"updated_at":"2026-08-13T17:53:51.632710Z","fetched_at":"2026-08-13T17:53:51.632710Z","added_at":"2026-08-13T12:22:41.420459Z","url":"https://www.gemini.com/predictions/TENNIS-WTACIN-20260813-WAL3-MAR9/simona-waltert-vs-petra-marcinko","chart_24h":[0.0,1066.4,1269.08,1286.62,3127.94,3127.94],"markets":[{"source":"gemini","id":"192497-461350","event_id":"192497","slug":"GEMI-TENNIS-WTACIN-20260813-WAL3-MAR9-WAL3","question":"Simona Waltert","group_item_title":"Simona Waltert","description":"This market resolves to Yes if Simona Waltert wins the tennis match between Simona Waltert and Petra Marcinko scheduled for August 13, 2026 at 11:00 AM ET. 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Read the full contract [terms & conditions](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba)","image":"https://images.ctfassets.net/jg6lo9a2ukvr/6567WKXP8dmDFtAcLkAnq7/95a3f8431a4365b125ec66236a59cba3/097-switzerland.png","icon":null,"outcomes":["Yes","No"],"outcome_prices":[1.0,0.0],"probability":1.0,"spread":0.04,"active":false,"closed":true,"start_date":"2026-08-13T05:00:00Z","end_date":"2026-08-14T03:00:00Z","closed_time":"2026-08-13T17:43:02.893000Z","volume":null,"volume_24hr":null,"prob_24h_change":0.52,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-13T17:53:53.179865Z","fetched_at":"2026-08-13T17:53:51.674829Z","added_at":"2026-08-13T12:22:41.945267Z","url":"https://www.gemini.com/predictions/TENNIS-WTACIN-20260813-WAL3-MAR9/simona-waltert-vs-petra-marcinko","event_title":"Simona Waltert vs Petra Marcinko","chart_24h":[0.48,0.49,0.5,0.37,0.21,0.34,0.99,1.0]},{"source":"gemini","id":"192497-461352","event_id":"192497","slug":"GEMI-TENNIS-WTACIN-20260813-WAL3-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 Simona Waltert scheduled for August 13, 2026 at 11:00 AM ET. Otherwise, it resolves 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. 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