{"source":"gemini","id":"204841","ticker":"TENNIS-WTACIN-20260821-GAU-KOS","slug":"coco-gauff-vs-marta-kostyuk","title":"Coco Gauff vs Marta Kostyuk","description":"Coco Gauff vs Marta Kostyuk","image":"https://assets.gemini.com/predictions/images/tennis_test_02_42aacd7e-073f-453c-a9a2-7f09d07bbc38.jpg","icon":null,"active":false,"closed":true,"start_date":"2026-08-20T09:01:34.686000Z","end_date":"2026-08-22T13:45:00Z","closed_time":"2026-08-22T03:08:19.168000Z","volume":33449.56,"volume_24hr":32874.17,"volume_24h_change":null,"normalized_vol_24hr":73.29711151123047,"normalized_volume":67.96829986572266,"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":"Coco Gauff","top_outcome_probability":1.0,"top_outcome_prob_24h_change":0.42000000000000004,"top_outcome_volume_24h_change":null,"updated_at":"2026-08-22T03:12:55.406967Z","fetched_at":"2026-08-22T03:12:55.406967Z","added_at":"2026-08-20T09:13:43.261440Z","url":"https://www.gemini.com/predictions/TENNIS-WTACIN-20260821-GAU-KOS/coco-gauff-vs-marta-kostyuk","chart_24h":[717.73,885.21,893.57,883.53,328.22,336.72,494.16,9909.72,9913.95,10781.39,29625.28,32581.09,32874.17],"markets":[{"source":"gemini","id":"204841-491521","event_id":"204841","slug":"GEMI-TENNIS-WTACIN-20260821-GAU-KOS-GAU","question":"Coco Gauff","group_item_title":"Coco Gauff","description":"This market resolves to Yes if Coco Gauff wins the tennis match between Coco Gauff and Marta Kostyuk scheduled for August 21, 2026 at 1:00 PM ET. 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