Los Angeles Lakers center Andrew Bynum's foul on Charlotte Bobcats forward Gerald Wallace in Tuesday night's game has been upgraded from a Flagrant-1 to the more serious Flagrant-2 violation, the Lakers learned from the NBA on Thursday.

Wallace suffered a cracked rib and partially collapsed lung as a result of the collision. He left Staples Center on a stretcher and was taken to Centinela Hospital.

Bynum told the Los Angeles Daily News on Thursday he called Wallace's cell phone and left a message.

"I didn't try to hurt him," Bynum told the Daily News. "His momentum was great, and if you look at the play, once he hit me I kind of spun around because I didn't know he was coming that fast.

"I wish him the best of luck and hope that he recovers."

Bobcats coach Larry Brown said he didn't think Bynum should be suspended.

"That kid waited at our bus, trying to get to Gerald, and he apologized to me,'' Brown told The Charlotte Observer. "If he had a history of that [rough play], I might feel different, but I just think it was a hard foul."