The NBA's Late-Game Gamble: Can Banning Prop Bets Save the Game's Soul?

The NBA is fighting to regain control of its integrity. Following a series of high-profile scandals, the league has issued a directive to its sportsbook partners to ban specific types of bets that are particularly susceptible to manipulation. As first reported by CBS Sports, the league distributed a memo on Friday targeting the 'lowest-hanging fruit' for potential conspirators.

***OPINION***: This is a reactive move. The league is trying to legislate away a culture of corruption that has already embedded itself into the fabric of the game. By the time the NBA decided to restrict these markets, the playbook for exploiting them had already been written and executed.

As reported by ESPN via CBS Sports, the NBA has directed authorized gambling operators—including FanDuel and DraftKings—to eliminate several problematic betting markets. These include 'first of' markets, such as the winner of the opening tip or a specific player's first shot, rebound, or assist. Furthermore, bettors will no longer be able to include the 'under' on a single player's statistics within a parlay. The league is also banning under bets on players expected to play fewer than 12 minutes in a game.

The mechanism for this exploitation is simple and devastating. As CBS Sports explains, if a player's rebounding line is set at 3.5, a bettor wagering on the 'under' wins if the player records three or fewer rebounds. A player can control this outcome by avoiding rebounds or fabricating an injury to exit the game early.

This approach was used by Jontay Porter, who was banned for life from the league in 2024. CBS Sports notes that Porter admitted in court to removing himself from games early to ensure his under bets hit. The scale of the manipulation was staggering; ESPN reports that federal prosecutors cited a criminal complaint involving a bettor who placed an $80,000 parlay on Porter's under lines for points, rebounds, assists, steals, blocks, and 3-pointers during a March 2024 game against the Kings. That single bet stood to pay out over one million dollars, and Porter exited the game after only three minutes of play.

While Porter is the most prominent example, CBS Sports indicates that similar conspiratorial allegations have surfaced regarding Malik Beasley and Terry Rozier, the latter of whom removed himself from a 2023 game after playing only nine minutes.

The NBA possesses the authority to restrict these offerings through its partner agreements, and the league estimates that its authorized sportsbooks control more than 99% of the U.S. betting market. However, the move highlights a precarious tension. The league is now deeply connected with gaming partners, yet it must fight to protect the integrity of the product those partners are selling. The crackdown is a clear signal that the NBA recognizes how damaging these scandals are to the league's image, but it remains to be seen if banning a few specific prop bets can truly insulate the game from a gambling culture that has already evolved past the rulebook.