The unions representing players from the NBA, NFL, MLB, NHL, and MLS have jointly called on the Commodity Futures Trading Commission (CFTC) to ban prediction market platforms from allowing users to bet on a player's underperformance or injury, Sports Business Journal reports.

The letter, penned by the unions, emphasizes the need for "appropriate regulations" to safeguard athletes and their families from "abusive and harassing behavior."

The unions drafted the letter in response to the CFTC's request for public comment on the regulation of prediction markets, including platforms operated by Kalshi and Polymarket.

In addition to seeking a ban on "under" bets, the unions also requested stricter oversight of these markets to prevent potential exploitation and harm to players.

Source: The Verge