{"source":"gemini","id":"97088","ticker":"WTAGS26","slug":"who-will-win-a-wta-grand-slam-this-year","title":"Who will win a WTA Grand Slam this year?","description":"Who will win a WTA Grand Slam this year?","image":"https://assets.gemini.com/predictions/images/tennis_test_02_42aacd7e-073f-453c-a9a2-7f09d07bbc38.jpg","icon":null,"active":true,"closed":false,"start_date":"2026-06-18T19:09:03.486000Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":1977.0,"volume_24hr":1250.0,"volume_24h_change":null,"normalized_vol_24hr":39.05705642700195,"normalized_volume":37.913856506347656,"liquidity":null,"open_interest":null,"categories":["Sports"],"tags":["Tennis"],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"Aryna Sabalenka","top_outcome_probability":0.27,"top_outcome_prob_24h_change":-0.019999999999999962,"top_outcome_volume_24h_change":null,"updated_at":"2026-08-11T15:28:24.734982Z","fetched_at":"2026-08-11T15:28:24.734982Z","added_at":"2026-06-18T19:13:59.551393Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","chart_24h":[700.0,800.0,1850.0,1250.0],"markets":[{"source":"gemini","id":"97088-287534","event_id":"97088","slug":"GEMI-WTAGS26-SABALENKA","question":"Aryna Sabalenka","group_item_title":"Aryna Sabalenka","description":"Resolves Yes if Aryna Sabalenka wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/046-united-nations_4a759f79-49ae-405f-ae6b-e3aae56ec928.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.27,0.78],"probability":0.27,"spread":0.05,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.019999999999999962,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.31,0.31,0.31,0.28,0.31,0.28,0.28,0.09,0.31,0.31,0.31,0.26,0.31,0.24,0.33,0.27]},{"source":"gemini","id":"97088-287535","event_id":"97088","slug":"GEMI-WTAGS26-GAUFF","question":"Coco Gauff","group_item_title":"Coco Gauff","description":"Resolves Yes if Coco Gauff wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/153-united-states-of-america_d33e33a3-5641-4b27-b720-11227e608984.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.14,0.9],"probability":0.14,"spread":0.04,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.010000000000000009,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:59:23.375262Z","fetched_at":"2026-08-11T18:59:06.507447Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.14,0.19,0.19,0.19,0.14,0.17,0.16,0.14,0.16,0.19,0.19,0.14,0.19,0.14,0.19,0.14,0.19,0.13,0.14]},{"source":"gemini","id":"97088-287533","event_id":"97088","slug":"GEMI-WTAGS26-SWIATEK","question":"Iga Swiatek","group_item_title":"Iga Swiatek","description":"Resolves Yes if Iga Swiatek wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/108-poland_04d28123-8757-44c6-aec4-f8aa6112e667.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.13,0.91],"probability":0.13,"spread":0.04,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.010000000000000009,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:38:36.749078Z","fetched_at":"2026-08-11T18:38:23.202859Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.15,0.15,0.15,0.13,0.15,0.15,0.15,0.13,0.15,0.13,0.15,0.12,0.13]},{"source":"gemini","id":"97088-287537","event_id":"97088","slug":"GEMI-WTAGS26-OSAKA","question":"Naomi Osaka","group_item_title":"Naomi Osaka","description":"Resolves Yes if Naomi Osaka wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/033-japan_eabdbb3b-37cb-4294-8663-7f890a53ead6.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.11,0.93],"probability":0.11,"spread":0.04,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.020000000000000004,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:38:36.749078Z","fetched_at":"2026-08-11T18:38:23.202859Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.1,0.14,0.14,0.07,0.08,0.07,0.14,0.14,0.07,0.14,0.1,0.14,0.1,0.14,0.14,0.11]},{"source":"gemini","id":"97088-287540","event_id":"97088","slug":"GEMI-WTAGS26-PEGULA","question":"Jessica Pegula","group_item_title":"Jessica Pegula","description":"Resolves Yes if Jessica Pegula wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/153-united-states-of-america_7310564c-24d0-4127-8db9-3133d9f42e95.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.06,0.98],"probability":0.06,"spread":0.04,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.010000000000000009,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.09,0.09,0.09,0.07,0.07,0.09,0.07,0.09,0.09,0.09,0.07,0.09,0.07,0.09,0.06]},{"source":"gemini","id":"97088-287536","event_id":"97088","slug":"GEMI-WTAGS26-ANISIMOVA","question":"Amanda Anisimova","group_item_title":"Amanda Anisimova","description":"Resolves Yes if Amanda Anisimova wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/153-united-states-of-america_a3de8367-bcec-4fa6-bd11-f062f833f5a2.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.05,0.99],"probability":0.05,"spread":0.04,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.0,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.07,0.07,0.07,0.05,0.07,0.05,0.06,0.07,0.07,0.05,0.07,0.05,0.07,0.05]},{"source":"gemini","id":"97088-287543","event_id":"97088","slug":"GEMI-WTAGS26-KEYS","question":"Madison Keys","group_item_title":"Madison Keys","description":"Resolves Yes if Madison Keys wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/153-united-states-of-america_ed979101-0935-4c23-b54e-17601312c9c8.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.05,0.99],"probability":0.05,"spread":0.04,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":0.010000000000000002,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.06,0.06,0.06,0.04,0.06,0.06,0.04,0.05,0.06,0.06,0.04,0.06,0.04,0.06,0.05]},{"source":"gemini","id":"97088-287545","event_id":"97088","slug":"GEMI-WTAGS26-NAVARRO","question":"Emma Navarro","group_item_title":"Emma Navarro","description":"Resolves Yes if Emma Navarro wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/153-united-states-of-america_2243209c-9008-4745-9f7b-e422250eb864.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.05,0.99],"probability":0.05,"spread":0.04,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.009999999999999995,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T19:20:34.280293Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.06,0.06,0.05,0.05,0.06,0.06,0.05,0.05,0.06,0.06,0.05,0.06,0.05,0.06,0.05,0.05]},{"source":"gemini","id":"97088-287539","event_id":"97088","slug":"GEMI-WTAGS26-JOVIC","question":"Iva Jovic","group_item_title":"Iva Jovic","description":"Resolves Yes if Iva Jovic wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/153-united-states-of-america_f069a8fc-8168-4fbd-ae86-10c590ec9f73.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.04,0.99],"probability":0.04,"spread":0.03,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.45,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T15:50:42.696355Z","fetched_at":"2026-08-11T03:10:52.266940Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.49,0.04,0.05,0.04,0.48,0.04,0.04]},{"source":"gemini","id":"97088-287544","event_id":"97088","slug":"GEMI-WTAGS26-FERNANDEZ","question":"Leylah Fernandez","group_item_title":"Leylah Fernandez","description":"Resolves Yes if Leylah Fernandez wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/206-canada_8d6c468b-2649-47c1-af9a-a10c63af3025.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.04,0.99],"probability":0.04,"spread":0.03,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.010000000000000002,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.08,0.08,0.08,0.04,0.08,0.08,0.04,0.06,0.08,0.08,0.04,0.08,0.04,0.08,0.04]},{"source":"gemini","id":"97088-287531","event_id":"97088","slug":"GEMI-WTAGS26-SVITOLINA","question":"Elina Svitolina","group_item_title":"Elina Svitolina","description":"Resolves Yes if Elina Svitolina wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/065-ukraine_750d919d-a920-4df5-a2d5-a75d270e8cb4.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.03,0.99],"probability":0.03,"spread":0.02,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.38,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.41,0.04,0.04,0.03]},{"source":"gemini","id":"97088-287538","event_id":"97088","slug":"GEMI-WTAGS26-RADUCANU","question":"Emma Raducanu","group_item_title":"Emma Raducanu","description":"Resolves Yes if Emma Raducanu wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/153-united-states-of-america_8b08c3a3-f246-4aa2-9b06-6fedc273cb9d.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.03,0.99],"probability":0.03,"spread":0.02,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.010000000000000002,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.06,0.06,0.06,0.04,0.06,0.06,0.04,0.06,0.06,0.04,0.06,0.04,0.06,0.03]},{"source":"gemini","id":"97088-287532","event_id":"97088","slug":"GEMI-WTAGS26-PAOLINI","question":"Jasmine Paolini","group_item_title":"Jasmine Paolini","description":"Resolves Yes if Jasmine Paolini wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/011-italy_993af523-390d-4582-825e-758a01629bcb.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.02,0.99],"probability":0.02,"spread":0.01,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.030000000000000002,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.05,0.05,0.02]},{"source":"gemini","id":"97088-287541","event_id":"97088","slug":"GEMI-WTAGS26-MBOKO","question":"Victoria Mboko","group_item_title":"Victoria Mboko","description":"Resolves Yes if Victoria Mboko wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/206-canada_0c3b07c9-393e-4dec-81cc-28a0266b680b.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.02,0.99],"probability":0.02,"spread":0.01,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.44,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.46,0.03,0.03,0.02]},{"source":"gemini","id":"97088-287542","event_id":"97088","slug":"GEMI-WTAGS26-ALEXANDROVA","question":"Ekaterina Alexandrova","group_item_title":"Ekaterina Alexandrova","description":"Resolves Yes if Ekaterina Alexandrova wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026. Outcome verified from [WTA](https://www.wtatennis.com/), [ESPN](https://www.espn.com/), [The New York Times](https://www.nytimes.com/), [the Associated Press](https://apnews.com/), and [Reuters](https://www.reuters.com/).\nView the full [rules](https://cdn.builder.io/o/assets%2F1b77ce3a269a43e985e77f3d65f715ba%2Fc2d5e4e082ad4474aed8dc47ce46c601?alt=media&token=87c8f8b7-0646-4105-bb60-6ee4307ce404&apiKey=1b77ce3a269a43e985e77f3d65f715ba).","image":"https://assets.gemini.com/predictions/images/046-united-nations_54dfcf53-6ba2-4f78-943a-d5d74aef9c97.avif","icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.02,0.99],"probability":0.02,"spread":0.01,"active":true,"closed":false,"start_date":"2026-01-01T00:00:00Z","end_date":"2027-01-01T23:59:59Z","closed_time":null,"volume":null,"volume_24hr":null,"prob_24h_change":-0.02,"volume_24h_change":null,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Sports"],"countries":[],"updated_at":"2026-08-11T18:17:39.109235Z","fetched_at":"2026-08-11T18:16:57.551438Z","added_at":"2026-06-18T19:13:59.904040Z","url":"https://www.gemini.com/predictions/WTAGS26/who-will-win-a-wta-grand-slam-this-year","event_title":"Who will win a WTA Grand Slam this year?","chart_24h":[0.22,0.22,0.04,0.22,0.22,0.04,0.05,0.22,0.22,0.06,0.06,0.02]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/gemini/97088","as_of":"2026-08-11T19:51:57.818991Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Gemini): \"Who will win a WTA Grand Slam this year?\" — top market at 27% probability across 15 outcomes","source_url":null}}