LeBron James is officially linking up with Polymarket, teasing a new partnership on Saturday, September 5, 2026. This move drops him right into the middle of the controversial prediction market industry. It’s huge for Polymarket, bringing on a four-time NBA champion and the founder of the SpringHill Company, especially as he gears up for his record 24th season in the league.
Polymarket Lands a King, But He’s Not Alone
James dropped a 14-second social media video showing him in an office elevator, with floors like “politics,” “crypto,” “culture,” and “weather” whizzing by. He flashed a smile as he stepped out on the “sports” floor, with the caption, “Welcome to Polymarket HQ. Coming soon.” The Athletic is reporting that Polymarket sent out a release promising more announcements this coming Tuesday, so we know more is on the way. While James would be the first NBA athlete to sign a partnership with Polymarket specifically, he is definitely not the first big name to dive into this space. Giannis Antetokounmpo, that Miami Heat star and former champion, invested directly in rival platform Kalshi back in February. And it’s not just basketball: tennis star Maria Sharapova has a deal with Polymarket, while soccer legend Lionel Messi signed with Kalshi. These prediction markets are even trying to push beyond sports, remember Timothée Chalamet’s one-minute ad for Kalshi in June? Or the Golden Globes broadcast earlier this year, partnering with Polymarket to show win probabilities for nominees?
The Legal Battle Is Heating Up Around These Markets
This big partnership news for James comes amidst some serious public setbacks for the prediction market industry. Just last Wednesday, the union representing New York Times staffers pushed hard against the company’s planned partnership with Kalshi, arguing it could mess with their journalistic independence. The New York Times eventually abandoned those plans. On that very same day, the state of New Jersey actually petitioned the Supreme Court, trying to get a ruling on whether states can regulate sports betting on these prediction markets. This whole thing kicked off after a 9th Circuit appeals court ruled that Nevada could stop Kalshi from letting people place sports bets. New Jersey Attorney General Jennifer Davenport didn’t hold back, saying in a press release that “Companies like Kalshi claim to offer legal sports betting in all 50 states, but they refuse to follow the gambling laws of any state.” This is a mess!
So, James is diving in, but the waters are definitely choppy for prediction markets right now. With more announcements promised for Tuesday, everyone is gonna be watching to see how this controversial industry navigates these legal challenges and what James’s full role will be. It’s a wild card.
This article was created with AI assistance and published under Seattle On Tap’s editorial standards. See our Editorial Policy.
Originally reported by Yahoo Sports.
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