{"source":"kalshi","id":"KXATPDOUBLES-26AUG21FRAHAAARROLI","ticker":"KXATPDOUBLES-26AUG21FRAHAAARROLI","slug":"KXATPDOUBLES-26AUG21FRAHAAARROLI","title":"Frantzen / Haase vs Arribage / Olivetti","description":null,"image":null,"icon":null,"active":false,"closed":true,"start_date":"2026-08-20T18:35:00Z","end_date":"2026-09-04T15:00:00Z","closed_time":"2026-08-21T17:00:12Z","volume":218116.15,"volume_24hr":218116.15,"volume_24h_change":null,"normalized_vol_24hr":53.63334655761719,"normalized_volume":41.64338684082031,"liquidity":null,"open_interest":164047.73,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26AUG21FRAHAAARROLI","parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Constantin Frantzen / Robin Haase","top_outcome_probability":0.99,"top_outcome_prob_24h_change":0.99,"top_outcome_volume_24h_change":105966.95,"updated_at":"2026-08-21T17:06:42.698914Z","fetched_at":"2026-08-21T17:06:42.698914Z","added_at":"2026-08-20T18:38:34.467303Z","url":"https://kalshi.com/markets/kxatpdoubles/frantzen-haase-vs-arribage-olivetti/kxatpdoubles-26aug21frahaaarroli","chart_24h":[14.78,18.75,108.31,1287.4499999999998,2761.74,13213.98,52365.25,218116.15],"markets":[{"source":"kalshi","id":"KXATPDOUBLES-26AUG21FRAHAAARROLI-FRAHAA","event_id":"KXATPDOUBLES-26AUG21FRAHAAARROLI","slug":"KXATPDOUBLES-26AUG21FRAHAAARROLI-FRAHAA","question":"Constantin Frantzen / Robin Haase wins","group_item_title":"Constantin Frantzen / Robin Haase","description":"If Constantin Frantzen / Robin Haase wins the Frantzen / Haase vs Arribage / Olivetti professional tennis match in the 2026 ATP Cincinnati Quarterfinal after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Frantzen / Haase vs Arribage / Olivetti professional tennis match in the 2026 ATP Cincinnati Quarterfinal 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":"2026-08-20T18:35:00Z","end_date":"2026-09-04T15:00:00Z","closed_time":"2026-08-21T17:00:12Z","volume":105966.95,"volume_24hr":105966.95,"prob_24h_change":0.99,"volume_24h_change":105966.95,"normalized_vol_24hr":52.44013595581055,"normalized_volume":41.678592681884766,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-21T17:08:53.566151Z","fetched_at":"2026-08-21T17:06:42.726606Z","added_at":"2026-08-20T18:38:34.857987Z","url":"https://kalshi.com/markets/kxatpdoubles/frantzen-haase-vs-arribage-olivetti/kxatpdoubles-26aug21frahaaarroli","event_title":"Frantzen / Haase vs Arribage / Olivetti","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.41,0.35,0.42,0.67,0.99]},{"source":"kalshi","id":"KXATPDOUBLES-26AUG21FRAHAAARROLI-ARROLI","event_id":"KXATPDOUBLES-26AUG21FRAHAAARROLI","slug":"KXATPDOUBLES-26AUG21FRAHAAARROLI-ARROLI","question":"Theo Arribage / Albano Olivetti wins","group_item_title":"Theo Arribage / Albano Olivetti","description":"If Theo Arribage / Albano Olivetti wins the Frantzen / Haase vs Arribage / Olivetti professional tennis match in the 2026 ATP Cincinnati Quarterfinal after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Frantzen / Haase vs Arribage / Olivetti professional tennis match in the 2026 ATP Cincinnati Quarterfinal 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":"2026-08-20T18:35:00Z","end_date":"2026-09-04T15:00:00Z","closed_time":"2026-08-21T17:00:12Z","volume":112149.2,"volume_24hr":112149.2,"prob_24h_change":0.01,"volume_24h_change":112149.2,"normalized_vol_24hr":52.955352783203125,"normalized_volume":42.08808135986328,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-21T17:08:53.566151Z","fetched_at":"2026-08-21T17:06:42.726606Z","added_at":"2026-08-20T18:38:34.857987Z","url":"https://kalshi.com/markets/kxatpdoubles/frantzen-haase-vs-arribage-olivetti/kxatpdoubles-26aug21frahaaarroli","event_title":"Frantzen / Haase vs Arribage / Olivetti","chart_24h":[0.0,0.0,0.73,0.73,0.73,0.73,0.73,0.73,0.73,0.73,0.73,0.73,0.74,0.74,0.62,0.68,0.67,0.59,0.33,0.01]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXATPDOUBLES-26AUG21FRAHAAARROLI","as_of":"2026-08-21T19:55:25.786214Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Frantzen / Haase vs Arribage / Olivetti\" — top market at 1% probability across 2 outcomes","source_url":null}}