LeBron’s $15 million Polymarket deal outpays his 76ers salary and tests NBA rules

LeBron James will earn far more this season from a prediction market than from the Philadelphia 76ers. Polymarket is paying James $15 million a year under the endorsement partnership he unveiled on Sept. 5, according to reporting by Front Office Sports’ Ryan Glasspiegel and Ben Horney. That is close to four times what he is due from the team in 2026-27.

James signed a two-year, $8 million contract with Philadelphia in July and is expected to make a little under $4 million from the 76ers this season. The Polymarket money alone is more than triple that figure every year the deal runs.

What the deal covers

James is an endorser, not an investor, and the length of the agreement has not been made public. One source described it to Front Office Sports as an “ongoing engagement” with multiple deliverables, including social media posts and other content. Under the deal, James promotes football rather than basketball, the same structure his earlier DraftKings endorsement used.

He was the headline name in a Polymarket commercial that also featured Derek Jeter and Eli Manning, who signed smaller longer-term deals, plus celebrities such as Spike Lee, Reggie Bush and Alexandra Daddario, some of whom were paid only for the one spot. Polymarket declined to comment on the figures.

Why football, not basketball

The NBA’s collective bargaining agreement lets players endorse gaming companies through general brand deals or by promoting betting on non-NBA sports, but their pay cannot depend on NBA wagering or game results. That rule explains why James’ gambling-adjacent deals have centered on football rather than the league he plays in.

The integrity question

The partnership lands awkwardly against the league’s own position. In an April filing with federal regulators, the NBA urged them to prohibit prediction markets on player transactions, warning they could be manipulated and open to misuse of confidential information. The league also flagged that markets without traditional identity checks pose “severe challenges” to keeping players and team staff out of prohibited trading.

James’ own free agency became the clearest example. A market on Polymarket’s blockchain-based international platform about his next team drew $46.23 million in trading, with Miami, Cleveland and Golden State favored at different points. Philadelphia was priced at roughly a 9% chance shortly before he chose the 76ers. Benzinga’s Daragh Thomas noted there is no evidence James traded on that market, shared information with traders or broke any NBA rule. The NBA’s filing addressed exchanges regulated by the CFTC, not the offshore platform where that market ran.

Where the leagues stand

Prediction markets have moved quickly into sports sponsorship. Polymarket is Major League Baseball’s exclusive prediction-market partner and, along with rival Kalshi, an official NHL partner. The NBA and NFL have not signed league-level deals, though Front Office Sports’ sources say the NBA is closing in on agreements while the NFL remains a holdout.

The sector is regulated federally, which has set off lawsuits from state attorneys general in New Jersey and Nevada, among others, and from several Native American tribes, who argue sports-event contracts are sports betting by another name. The question of state versus federal authority is widely expected to reach the Supreme Court. Polymarket counts the parent company of the New York Stock Exchange and 1789 Capital, Donald Trump Jr.’s investment firm, among its backers.

For the 76ers, the James signing has already paid off commercially through ticket demand and a new jersey patch. For the league, the biggest name on its marquee team is now the face of an industry it has asked regulators to rein in, at least where player moves are concerned.