Gilbert Arenas was admonished by the NBA for making $10 bets with fans during the Wizards' loss at Portland on Wednesday.

"We spoke to Gilbert and explained the issue to him," NBA spokesman John Acunto said Sunday. "And he assured us he wouldn't do anything like this again."

Arenas made the bets as he bantered with fans throughout the Wizards' loss. He was booed during pregame introductions and whenever he touched the ball because he had promised to score 50 points against the Trail Blazers.