The NBA is issuing revised guidelines on cell phone use during games for players and coaches, according to the report

The NBA is expected to announce a revised policy on cell phone and social media use during games for players and coaches, according to SNY’s Ian Begley. Begley said the NBPA has worked closely with the league on this revision and will build on the existing policy. This original policy was implemented in 2009 and the league defined “during games” as the period beginning 45 minutes before the start of the game and ending after media duties have been completed.

While gamer use of social media during games is rare, it is not unheard of. The 2009 rule was originally informally referred to as the “Villanueva Rule” after then-Milwaukee Bucks forward Charlie Villanueva tweeted from the locker room at halftime of a game. Chauncey Billups, coach of the Portland Trail Blazers has also told the story of one of his players posting a highlight video of a dunk at halftime while they were down 18 points. Some teams also have their own cell phone and social media usage policies that go beyond league guidelines.

While tweets and highlights are relatively harmless, there is a more serious reason why the league currently wants to strictly enforce these policies: the proliferation of legal sports betting. Last season, then-Toronto Raptors forward Jontay Porter was banned from the NBA for life after he allegedly leaked information to bettors that allowed them to place prop bets on his individual stats.

The last thing the league wants right now is important pre-game information on topics like health or strategy reaching bettors before the game begins.

As part of this policy, teams will designate a communication point for players and coaches during the time when cell phones are not permitted. It is currently unclear what the penalty would be for violating this policy, but since the league has now decided to highlight a 15-year-old policy, it appears to be a rule that the league appears intent on strictly enforcing.