{"source":"kalshi","id":"KXATPCHALLENGERMATCH-26SEP13GRUOST","ticker":"KXATPCHALLENGERMATCH-26SEP13GRUOST","slug":"KXATPCHALLENGERMATCH-26SEP13GRUOST","title":"Grumet vs Ostapenkov","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-09-13T08:41:00Z","end_date":"2026-09-27T20:30:00Z","closed_time":null,"volume":9618.24,"volume_24hr":7606.0,"volume_24h_change":null,"normalized_vol_24hr":25.425077438354492,"normalized_volume":22.83714485168457,"liquidity":null,"open_interest":9529.65,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26SEP13GRUOST","parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Daniil Ostapenkov","top_outcome_probability":0.8,"top_outcome_prob_24h_change":0.8,"top_outcome_volume_24h_change":6979.03,"updated_at":"2026-09-13T19:09:57.933241Z","fetched_at":"2026-09-13T19:09:57.933241Z","added_at":"2026-09-13T08:54:12.346648Z","url":"https://kalshi.com/markets/kxatpchallengermatch/grumet-vs-ostapenkov/kxatpchallengermatch-26sep13gruost","chart_24h":[0.0,0.0,0.7,23.44,7410.43,7489.08,7490.27,7502.27,7590.24,7606.0],"kind":"live","markets":[{"source":"kalshi","id":"KXATPCHALLENGERMATCH-26SEP13GRUOST-OST","event_id":"KXATPCHALLENGERMATCH-26SEP13GRUOST","slug":"KXATPCHALLENGERMATCH-26SEP13GRUOST-OST","question":"Daniil Ostapenkov wins","group_item_title":"Daniil Ostapenkov","description":"If Daniil Ostapenkov wins the Grumet vs Ostapenkov professional tennis match in the 2026 ATP Challenger Tiburon Qualification Round 1 after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Grumet vs Ostapenkov professional tennis match in the 2026 ATP Challenger Tiburon Qualification Round 1 after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks).\n\nKalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.8,0.19999999999999996],"probability":0.8,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2026-09-13T08:41:00Z","end_date":"2026-09-27T20:30:00Z","closed_time":"2026-09-27T20:30:00Z","volume":7800.68,"volume_24hr":6979.03,"prob_24h_change":0.8,"volume_24h_change":6979.03,"normalized_vol_24hr":26.558807373046875,"normalized_volume":25.00336265563965,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-13T19:09:58.061536Z","fetched_at":"2026-09-13T19:09:58.061536Z","added_at":"2026-09-13T08:54:12.408084Z","url":"https://kalshi.com/markets/kxatpchallengermatch/grumet-vs-ostapenkov/kxatpchallengermatch-26sep13gruost","event_title":"Grumet vs Ostapenkov","chart_24h":[0.0,0.82,0.82,0.82,0.82,0.83,0.83,0.81,0.83,0.83,0.83,0.8]},{"source":"kalshi","id":"KXATPCHALLENGERMATCH-26SEP13GRUOST-GRU","event_id":"KXATPCHALLENGERMATCH-26SEP13GRUOST","slug":"KXATPCHALLENGERMATCH-26SEP13GRUOST-GRU","question":"Gus Grumet wins","group_item_title":"Gus Grumet","description":"If Gus Grumet wins the Grumet vs Ostapenkov professional tennis match in the 2026 ATP Challenger Tiburon Qualification Round 1 after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Grumet vs Ostapenkov professional tennis match in the 2026 ATP Challenger Tiburon Qualification Round 1 after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks).\n\nKalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.2,0.8],"probability":0.2,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2026-09-13T08:41:00Z","end_date":"2026-09-27T20:30:00Z","closed_time":"2026-09-27T20:30:00Z","volume":1817.56,"volume_24hr":626.97,"prob_24h_change":0.2,"volume_24h_change":626.97,"normalized_vol_24hr":14.07182788848877,"normalized_volume":17.537731170654297,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-13T19:09:58.061536Z","fetched_at":"2026-09-13T19:09:58.061536Z","added_at":"2026-09-13T08:54:12.408084Z","url":"https://kalshi.com/markets/kxatpchallengermatch/grumet-vs-ostapenkov/kxatpchallengermatch-26sep13gruost","event_title":"Grumet vs Ostapenkov","chart_24h":[0.0,0.0,0.0,0.0,0.2,0.2,0.2,0.2,0.18,0.2]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXATPCHALLENGERMATCH-26SEP13GRUOST","as_of":"2026-09-13T19:17:27.235384Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Grumet vs Ostapenkov\" — top market at 80% probability across 2 outcomes","source_url":null}}