NFL restricts high-risk betting categories, including prediction markets
The NFL has listed prohibited betting categories in a memo, including wagers on player injuries, referee decisions and individual player actions, according to the report. The league also treats the use of prediction markets such as Kalshi and Polymarket as prohibited gambling activity; the memo is expected to have little effect on US legal sportsbooks, which rarely offer these markets.
The restrictions clarify which wager types the NFL regards as prohibited, including prediction-market activity.