The NBA is ordering sportsbook partners to stop offering several types of wagers linked to recent gambling scandals, introducing new restrictions this season as the league seeks to protect the integrity of its games.

In a Friday memo, the league directed authorized betting partners, including FanDuel and DraftKings, to eliminate markets involving player prop parlays, opening tip-off winners, whether players miss specific shots and under bets on players expected to receive fewer than 12 minutes of playing time.

Sportsbooks will also be prohibited from offering higher-payout lines on under wagers, which allow gamblers to bet that a player’s statistical performance will fall below a specified threshold.

“There’s a balance between ensuring that we are removing problematic bet types but also ensuring that we don’t just move activity into the illegal market,” NBA executive vice president Scott Kaufman-Ross told ESPN.

“Where we landed right now, we think, is the right balance of those two objectives.”

The restrictions follow federal gambling investigations involving former Toronto Raptors player Jontay Porter and Miami Heat guard Terry Rozier, both of whom were implicated in cases involving suspicious wagering activity.

Federal prosecutors said one bettor placed an $80,000 wager on the under for Porter across six statistical categories during a Raptors game in the 2023-24 season, potentially earning a $1.1 million payout. Porter admitted removing himself from a game to benefit bettors.

Prosecutors have also alleged that Rozier was involved in a similar scheme while playing for the Charlotte Hornets in 2023. Rozier has pleaded not guilty and denied wrongdoing.

The NBA’s agreements with authorized sportsbook operators allow the league to restrict the types of wagers offered on its games. The latest measures are intended to limit betting markets that could create incentives for players to manipulate individual performances or otherwise compromise competition.

The league is also introducing additional integrity measures this season. In a separate memo to teams, the NBA said former NFL star and retired FBI agent Charles Tillman would lead training on sports betting rules, while enhanced artificial intelligence systems would help identify unusual wagering patterns.

The league said it also wants to better protect players, coaches and other personnel from threats and harassment directed at them by bettors.

The new restrictions reflect the NBA’s effort to address growing concerns over the risks associated with sports gambling, particularly wagers tied to individual player statistics that may be influenced by limited playing time or other on-court decisions.