LeBron James has teased a new partnership with prediction market platform Polymarket, posting a 14-second video to his X and Instagram accounts on Saturday. The clip shows the Philadelphia 76ers forward entering a branded Polymarket office before the company logo and the words “COMING SOON” appear. James captioned the video, “Welcome to Polymarket HQ. Coming soon,” and added, “In partnership with @Polymarket.”
A spokesperson for James said the video previews a larger campaign expected to launch next week. The partnership will focus on football, following the expiration of James’ previous agreement with DraftKings. This appears to be the first public reveal of a formal relationship between James and Polymarket, though it remains unclear whether he will act as a brand ambassador, investor, or broader sponsor. Polymarket reposted the video shortly after publication, responding with “thanks for swinging by our HQ” and a goat emoji.
The teaser follows James’ recent free-agency decision, which generated more than $273 million in prediction-market trading across platforms. Before the decision, the Philadelphia 76ers traded at roughly 9% odds while the Miami Heat were seen as the more likely destination at about 45%. James ultimately signed a two-year, $8 million contract with a player option to join the Philadelphia 76ers, surprising many traders. The heavy volume underscored how athlete decisions can become market events when platforms allow users to trade contracts on uncertain outcomes.
For Polymarket, the partnership with one of the world’s most recognizable athletes could broaden mainstream awareness of prediction markets beyond crypto-native and trading audiences. The move comes as prediction platforms compete for visibility through sports relationships, though it also draws attention to regulatory questions around event contracts and sports-related trading. Some fan replies criticized the partnership, while the exact details are expected to emerge next week.
