NBA commissioner Adam Silver said Wednesday that Porter (personal), who is under investigation by the league following multiple instances of betting irregularities over the past several months, could face a permanently ban from the league if the investigation finds that the 24-year-old had any involvement in the increased betting interest surrounding his prop bets earlier in the season, Tim Bontemps of ESPN.com reports. "I have an enormous range of discipline available to me," Silver said. "But it's a cardinal sin, what he's accused of in the NBA, and the ultimate, extreme option I have is to ban him from the game. Because there's nothing more serious, I think, around this league when it comes to gambling: betting on our games. And that is a direct player involvement. And so, the investigation is ongoing, but the consequences could be very severe."

Porter, who is listed as out for Monday's game against the Nets due to a personal matter, has been away from the team because he's the subject of an NBA investigation into irregularities on prop bets involving him from games played Jan. 26 and March 20, Adrian Wojnarowski of ESPN reports.