Here's a list of every athlete with a prediction market deal in 2026, from LeBron James to Giannis
Many current and former athletes have signed deals with prediction markets, which let people trade on real-world events. LeBron James became the first active athlete to work with Polymarket, announcing his deal in September. Polymarket also has deals with several retired players, including Eli Manning and Derek Jeter. Kalshi has more athlete deals than its rival, with the largest individual deal belonging to Giannis Antetokounmpo. Lionel Messi announced his Kalshi deal in June, and Bryson DeChambeau became the first golfer to partner with a prediction market.