NEW YORK — LeBron James has teased an upcoming individual partnership with Polymarket, the prediction market platform, becoming the first NBA player to sign such an agreement with the company as prediction markets continue expanding their reach across professional sports.

James posted a 14-second video Saturday on X and Instagram appearing to promote the partnership, showing the four-time NBA champion inside an elevator at what the video labeled "Polymarket HQ." The elevator's buttons displayed categories including sports, politics, crypto, economy, culture and weather, with James selecting the sports option before walking into a busy office-style setting.

"Welcome to Polymarket HQ. Coming soon," James wrote in the post. "In partnership with Polymarket."

Polymarket quickly responded to James's post on X.

"Thanks for stopping by our HQ," the company wrote.

The specific terms and full scope of James's role in the partnership have not been publicly disclosed. A person familiar with the matter told CNBC that the campaign between James and Polymarket will focus specifically on football, and that additional details are expected in the days ahead. A Polymarket spokesperson told The Athletic that the company hopes to leverage "James' love for the sport" as the football season approaches.

According to Front Office Sports, the partnership comes shortly after James's prior endorsement deal with DraftKings expired earlier this summer. A source familiar with the arrangement told the outlet that Saturday's post marked the first step in a larger campaign expected to launch early this week, with the football-focused partnership structure........

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