{"_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/KXATPDOUBLES-26NOV13GREHEIFRASTE","as_of":"2026-11-13T16:04:16.392977Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Grevelius / Heinonen vs Frantzen / Stevens\" — \"Constantin Frantzen / Bart Stevens\" leads at 59% across 2 outcomes as of 2026-11-13 UTC. https://pdata.world/events/kalshi/KXATPDOUBLES-26NOV13GREHEIFRASTE","source_url":"https://kalshi.com/markets/kxatpdoubles/grevelius-heinonen-vs-frantzen-stevens/kxatpdoubles-26nov13greheifraste"},"source":"kalshi","id":"KXATPDOUBLES-26NOV13GREHEIFRASTE","ticker":"KXATPDOUBLES-26NOV13GREHEIFRASTE","slug":"KXATPDOUBLES-26NOV13GREHEIFRASTE","title":"Grevelius / Heinonen vs Frantzen / Stevens","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-11-12T19:25:00Z","end_date":"2026-11-27T17:10:00Z","closed_time":null,"volume":9676.8,"volume_24hr":9676.8,"volume_24h_change":null,"normalized_vol_24hr":24.544940948486328,"normalized_volume":22.188528060913086,"liquidity":null,"open_interest":9565.95,"categories":["Sports"],"tags":[],"synthetic":false,"is_group":false,"group_key":"26NOV13GREHEIFRASTE","parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Constantin Frantzen / Bart Stevens","top_outcome_probability":0.59,"top_outcome_prob_24h_change":0.59,"top_outcome_volume_24h_change":4520.41,"updated_at":"2026-11-13T15:48:20.979485Z","fetched_at":"2026-11-13T15:48:20.979485Z","added_at":"2026-11-12T19:31:59.333663Z","url":"https://kalshi.com/markets/kxatpdoubles/grevelius-heinonen-vs-frantzen-stevens/kxatpdoubles-26nov13greheifraste","chart_24h":[0.0,556.8,944.2,9430.35,9540.98,9540.98,9542.650000000001,9543.76,9560.82,9567.05,9603.75,9603.75],"kind":"live","mutually_exclusive":true,"markets_total":2,"markets":[{"source":"kalshi","id":"KXATPDOUBLES-26NOV13GREHEIFRASTE-FRASTE","event_id":"KXATPDOUBLES-26NOV13GREHEIFRASTE","slug":"KXATPDOUBLES-26NOV13GREHEIFRASTE-FRASTE","question":"Constantin Frantzen / Bart Stevens wins","group_item_title":"Constantin Frantzen / Bart Stevens","description":"If Constantin Frantzen / Bart Stevens wins the Grevelius / Heinonen vs Frantzen / Stevens professional tennis match in the 2026 ATP Stockholm Semifinal after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Grevelius / Heinonen vs Frantzen / Stevens professional tennis match in the 2026 ATP Stockholm 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":[0.59,0.41000000000000003],"probability":0.59,"spread":0.020000000000000018,"active":true,"closed":false,"start_date":"2026-11-12T19:25:00Z","end_date":"2026-11-27T17:10:00Z","closed_time":"2026-11-27T17:10:00Z","result":null,"volume":4520.41,"volume_24hr":4520.41,"prob_24h_change":0.59,"volume_24h_change":4520.41,"normalized_vol_24hr":23.686397552490234,"normalized_volume":19.874576568603516,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-11-13T15:48:21.134691Z","fetched_at":"2026-11-13T15:48:21.134691Z","added_at":"2026-11-12T19:31:59.638374Z","url":"https://kalshi.com/markets/kxatpdoubles/grevelius-heinonen-vs-frantzen-stevens/kxatpdoubles-26nov13greheifraste","event_title":"Grevelius / Heinonen vs Frantzen / Stevens","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.63,0.58,0.58,0.53,0.53,0.53,0.58,0.58,0.58,0.58,0.59,0.59]},{"source":"kalshi","id":"KXATPDOUBLES-26NOV13GREHEIFRASTE-GREHEI","event_id":"KXATPDOUBLES-26NOV13GREHEIFRASTE","slug":"KXATPDOUBLES-26NOV13GREHEIFRASTE-GREHEI","question":"Erik Grevelius / Adam Heinonen wins","group_item_title":"Erik Grevelius / Adam Heinonen","description":"If Erik Grevelius / Adam Heinonen wins the Grevelius / Heinonen vs Frantzen / Stevens professional tennis match in the 2026 ATP Stockholm Semifinal after a ball has been played, then the market resolves to Yes.\n\n---\n\nThe following market refers to the Grevelius / Heinonen vs Frantzen / Stevens professional tennis match in the 2026 ATP Stockholm 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":[0.42,0.5800000000000001],"probability":0.42,"spread":0.010000000000000009,"active":true,"closed":false,"start_date":"2026-11-12T19:25:00Z","end_date":"2026-11-27T17:10:00Z","closed_time":"2026-11-27T17:10:00Z","result":null,"volume":5156.39,"volume_24hr":5156.39,"prob_24h_change":0.42,"volume_24h_change":5156.39,"normalized_vol_24hr":24.432939529418945,"normalized_volume":20.500978469848633,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-11-13T15:48:21.134691Z","fetched_at":"2026-11-13T15:48:21.134691Z","added_at":"2026-11-12T19:31:59.638374Z","url":"https://kalshi.com/markets/kxatpdoubles/grevelius-heinonen-vs-frantzen-stevens/kxatpdoubles-26nov13greheifraste","event_title":"Grevelius / Heinonen vs Frantzen / Stevens","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.35,0.35,0.35,0.47,0.48,0.48,0.43,0.43,0.41,0.41,0.42]}]}