{"_meta":{"attribution":"Data aggregated by pdata.world (https://pdata.world) from 8 prediction-market venues; CC BY 4.0; source data © each venue.","canonical_url":"https://pdata.world/events/kalshi/KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL","as_of":"2026-10-17T13:07:47.240984Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"de Jonge / Opitz vs Stevenson / Willis\" — resolved: \"David Stevenson / Marcus Willis\" (closed 2026-10-17). https://pdata.world/events/kalshi/KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL","source_url":"https://kalshi.com/markets/kxatpchallengerdoubles/de-jonge-opitz-vs-stevenson-willis/kxatpchallengerdoubles-26oct17deopistewil"},"source":"kalshi","id":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL","ticker":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL","slug":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL","title":"de Jonge / Opitz vs Stevenson / Willis","description":null,"image":null,"icon":null,"active":false,"closed":true,"start_date":"2026-10-16T21:40:00Z","end_date":"2026-10-31T09:30:00Z","closed_time":"2026-10-17T11:29:50Z","volume":9066.630000000001,"volume_24hr":9066.630000000001,"volume_24h_change":null,"normalized_vol_24hr":28.335224151611328,"normalized_volume":22.29469871520996,"liquidity":null,"open_interest":6845.07,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26OCT17DEOPISTEWIL","parent_event_id":null,"probability":null,"spread":null,"top_outcome":"David Stevenson / Marcus Willis","top_outcome_probability":0.99,"top_outcome_prob_24h_change":0.99,"top_outcome_volume_24h_change":4209.41,"updated_at":"2026-10-17T11:33:12.291819Z","fetched_at":"2026-10-17T11:33:12.291819Z","added_at":"2026-10-16T21:51:30.732585Z","url":"https://kalshi.com/markets/kxatpchallengerdoubles/de-jonge-opitz-vs-stevenson-willis/kxatpchallengerdoubles-26oct17deopistewil","chart_24h":[0.0,442.89,2950.0,9066.630000000001],"kind":"live","mutually_exclusive":true,"markets_total":2,"markets":[{"source":"kalshi","id":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL-STEWIL","event_id":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL","slug":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL-STEWIL","question":"David Stevenson / Marcus Willis wins","group_item_title":"David Stevenson / Marcus Willis","description":"If David Stevenson / Marcus Willis wins the de Jonge / Opitz vs Stevenson / Willis professional tennis match in the 2026 ATP Challenger Roanne Semifinal after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the de Jonge / Opitz vs Stevenson / Willis professional tennis match in the 2026 ATP Challenger Roanne Semifinal 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":[0.99,0.010000000000000009],"probability":0.99,"spread":1.0,"active":false,"closed":true,"start_date":"2026-10-16T21:40:00Z","end_date":"2026-10-31T09:30:00Z","closed_time":"2026-10-17T11:29:50Z","result":"yes","volume":4209.41,"volume_24hr":4209.41,"prob_24h_change":0.99,"volume_24h_change":4209.41,"normalized_vol_24hr":26.610767364501953,"normalized_volume":21.680280685424805,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-10-17T11:33:12.300327Z","fetched_at":"2026-10-17T11:33:12.300327Z","added_at":"2026-10-16T21:51:30.846116Z","url":"https://kalshi.com/markets/kxatpchallengerdoubles/de-jonge-opitz-vs-stevenson-willis/kxatpchallengerdoubles-26oct17deopistewil","event_title":"de Jonge / Opitz vs Stevenson / Willis","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.82,0.93,0.99]},{"source":"kalshi","id":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL-DEOPI","event_id":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL","slug":"KXATPCHALLENGERDOUBLES-26OCT17DEOPISTEWIL-DEOPI","question":"Daniel de Jonge / Jannik Opitz wins","group_item_title":"Daniel de Jonge / Jannik Opitz","description":"If Daniel de Jonge / Jannik Opitz wins the de Jonge / Opitz vs Stevenson / Willis professional tennis match in the 2026 ATP Challenger Roanne Semifinal after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the de Jonge / Opitz vs Stevenson / Willis professional tennis match in the 2026 ATP Challenger Roanne Semifinal 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":[0.01,0.99],"probability":0.01,"spread":1.0,"active":false,"closed":true,"start_date":"2026-10-16T21:40:00Z","end_date":"2026-10-31T09:30:00Z","closed_time":"2026-10-17T11:29:50Z","result":"no","volume":4857.22,"volume_24hr":4857.22,"prob_24h_change":0.01,"volume_24h_change":4857.22,"normalized_vol_24hr":27.531278610229492,"normalized_volume":22.43023681640625,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-10-17T11:33:12.300327Z","fetched_at":"2026-10-17T11:33:12.300327Z","added_at":"2026-10-16T21:51:30.846116Z","url":"https://kalshi.com/markets/kxatpchallengerdoubles/de-jonge-opitz-vs-stevenson-willis/kxatpchallengerdoubles-26oct17deopistewil","event_title":"de Jonge / Opitz vs Stevenson / Willis","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.15,0.14,0.01]}]}