In a social media post on “X,” NBA icon LeBron James teased a pending partnership with Polymarket, a leading prediction market operator.
Key Takeaways
- LeBron James announces a pending partnership with Polymarket on “X.”
- NBA player Giannis Antetokounmpo, the NHL and MLB have already forged partnerships with prediction market providers.
- Prediction market deals continue, even as legal questions remain.
In his Saturday post, LeBron James stated “Welcome to Polymarket HQ. Coming soon. 👀 In partnership with @Polymarket.” The post was accompanied by a video of King James purportedly walking into the prediction market operator’s headquarters, ending with “Coming Soon.”
Welcome to Polymarket HQ. Coming soon. 👀
— LeBron James (@KingJames) September 5, 2026
In partnership with @Polymarket pic.twitter.com/bNe5s1IkdO
Comments on the post were predominantly critical, including “Don’t do this Bron,” “You’re richer than almost 40% of countries on this planet, and yet are still selling out to the gambling industry,” and “LeSellout.”
LeBron, however, is hardly the only athlete to partner with the burgeoning prediction market sector. In fact, LeBron isn’t even the first NBA player to align with a prediction market operator. Earlier this year, Giannis Antetokounmpo announced that he had become a Kalshi shareholder.
LeBron has already generated so much revenue for the prediction markets. Earlier this year, LeBron became a free agent, triggering more than $270 million in prediction market trading volume. Prediction market contracts on “LeBron’s next team” exceeded $225 million on Kalshi and $40 million on Polymarket.
Meanwhile, it’s not just a few athletes partnering with prediction markets. Teams and leagues are starting to sign on to the fast-growing trading model.
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Teams, leagues warming up to prediction market sector
In October, the NHL became the first major league to sign a multi-year deal with both Kalshi and Polymarket. In May, Polymarket became an official prediction market provider for MLB. In July, the New York Mets signed a deal with Novig while the New York Yankees signed their own prediction market deal with Polymarket in August.
After the New York MLB team prediction market partnerships, American University professor Matthew Bakowicz told Covers similar moves could soon follow. Just days later, Kalshi signed with five MLB teams, including the Braves, Red Sox, Dodgers, Padres, and Giants.
Legal standing of prediction markets still unclear
While LeBron’s likely deal is lighting up social media, the uncertain legal future of prediction markets continues to make the headlines. Just this week, New Jersey filed a petition for writ of certiorari to the Supreme Court, asking if state sports betting-related laws can be applied to prediction markets. Meanwhile, the U.S. Court of Appeals for the Ninth Circuit affirmed a lower court’s decision, dissolving a prediction market’s preliminary injunction, allowing Nevada to prevent it from operating in the state.
Neither of these recent legal developments, however, will resolve the legal uncertainties associated with prediction market operation. Even if the Supreme Court were to take up New Jersey’s case, it would likely be more than a year before it would render a decision. In the meantime, more deals between prediction markets and professional athletes like Lebron’s are likely.
