{"source":"kalshi","id":"KXATPDOUBLES-26SEP06HELPATARNSTR","ticker":"KXATPDOUBLES-26SEP06HELPATARNSTR","slug":"KXATPDOUBLES-26SEP06HELPATARNSTR","title":"Heliovaara / Patten vs Arnaldi / Struff J-L","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-09-04T19:36:00Z","end_date":"2026-09-20T15:00:00Z","closed_time":null,"volume":1345.18,"volume_24hr":1273.18,"volume_24h_change":null,"normalized_vol_24hr":17.787830352783203,"normalized_volume":14.126718521118164,"liquidity":null,"open_interest":1341.3200000000002,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26SEP06HELPATARNSTR","parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Harri Heliovaara / Henry Patten","top_outcome_probability":0.87,"top_outcome_prob_24h_change":0.12,"top_outcome_volume_24h_change":1126.74,"updated_at":"2026-09-06T11:03:33.837864Z","fetched_at":"2026-09-06T11:03:33.837864Z","added_at":"2026-09-04T19:47:56.717451Z","url":"https://kalshi.com/markets/kxatpdoubles/heliovaara-patten-vs-arnaldi-struff-j-l/kxatpdoubles-26sep06helpatarnstr","chart_24h":[126.0,226.0,395.1,512.98,653.02,674.8000000000001,739.8000000000001,745.49,747.54,681.97,704.69,1268.7],"kind":"live","markets":[{"source":"kalshi","id":"KXATPDOUBLES-26SEP06HELPATARNSTR-HELPAT","event_id":"KXATPDOUBLES-26SEP06HELPATARNSTR","slug":"KXATPDOUBLES-26SEP06HELPATARNSTR-HELPAT","question":"Harri Heliovaara / Henry Patten wins","group_item_title":"Harri Heliovaara / Henry Patten","description":"If Harri Heliovaara / Henry Patten wins the Heliovaara / Patten vs Arnaldi / Struff J-L professional tennis match in the 2026 US Open Men Doubles Round Of 32 after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Heliovaara / Patten vs Arnaldi / Struff J-L professional tennis match in the 2026 US Open Men Doubles Round Of 32 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":[0.87,0.13],"probability":0.87,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2026-09-04T19:36:00Z","end_date":"2026-09-20T15:00:00Z","closed_time":"2026-09-20T15:00:00Z","volume":1186.74,"volume_24hr":1156.74,"prob_24h_change":0.12,"volume_24h_change":1126.74,"normalized_vol_24hr":18.035751342773438,"normalized_volume":15.603509902954102,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-06T11:03:33.928448Z","fetched_at":"2026-09-06T11:03:33.928448Z","added_at":"2026-09-04T19:47:56.820595Z","url":"https://kalshi.com/markets/kxatpdoubles/heliovaara-patten-vs-arnaldi-struff-j-l/kxatpdoubles-26sep06helpatarnstr","event_title":"Heliovaara / Patten vs Arnaldi / Struff J-L","chart_24h":[0.75,0.75,0.74,0.74,0.77,0.81,0.82,0.82,0.82,0.82,0.86,0.86,0.86,0.82,0.86,0.85,0.86,0.87,0.87]},{"source":"kalshi","id":"KXATPDOUBLES-26SEP06HELPATARNSTR-ARNSTR","event_id":"KXATPDOUBLES-26SEP06HELPATARNSTR","slug":"KXATPDOUBLES-26SEP06HELPATARNSTR-ARNSTR","question":"Matteo Arnaldi / Jan-Lennard Struff wins","group_item_title":"Matteo Arnaldi / Jan-Lennard Struff","description":"If Matteo Arnaldi / Jan-Lennard Struff wins the Heliovaara / Patten vs Arnaldi / Struff J-L professional tennis match in the 2026 US Open Men Doubles Round Of 32 after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Heliovaara / Patten vs Arnaldi / Struff J-L professional tennis match in the 2026 US Open Men Doubles Round Of 32 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":[0.13,0.87],"probability":0.13,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2026-09-04T19:36:00Z","end_date":"2026-09-20T15:00:00Z","closed_time":"2026-09-20T15:00:00Z","volume":158.44,"volume_24hr":116.44,"prob_24h_change":-0.12,"volume_24h_change":74.44,"normalized_vol_24hr":8.232476234436035,"normalized_volume":8.00720500946045,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-09-06T10:19:26.778290Z","fetched_at":"2026-09-06T10:19:26.778290Z","added_at":"2026-09-04T19:47:56.820595Z","url":"https://kalshi.com/markets/kxatpdoubles/heliovaara-patten-vs-arnaldi-struff-j-l/kxatpdoubles-26sep06helpatarnstr","event_title":"Heliovaara / Patten vs Arnaldi / Struff J-L","chart_24h":[0.25,0.25,0.25,0.25,0.25,0.25,0.25,0.25,0.25,0.2,0.19,0.21,0.21,0.21,0.21,0.21,0.21,0.21,0.19,0.19,0.13,0.13]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXATPDOUBLES-26SEP06HELPATARNSTR","as_of":"2026-09-06T11:34:04.253429Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Heliovaara / Patten vs Arnaldi / Struff J-L\" — top market at 87% probability across 2 outcomes","source_url":null}}