WASHINGTON — Charlotte Bobcats forward Gerald Wallace will miss at least two weeks after suffering his fourth concussion in four seasons last night in a loss to Sacramento.

"Gerald is probably going to be two weeks to maybe slightly more," Charlotte coach Sam Vincent said before today's game with the Washington Wizards. "He's in an observation stage."

Wallace was knocked unconscious by an inadvertent elbow to the face by the Kings' Mikki Moore, and was taken to the hospital. A team official said Wallace was suffering some amnesia, but tests showed no fractures and no internal bleeding.

Wallace was released from the hospital later last night.

"I think everybody, coaching staff, organization, wants to be cautious about getting him back," Vincent said. "We want to make sure there's no danger to his health. We're going to give him the time, let him get examined, follow the process to make sure he's OK when he's ready to play."

Although the concussion wasn't Wallace's fault, Vincent said the team has been concerned about the forward's aggressive style of play.

"This is something serious," Vincent said. "I think coming back, he's got to be a little concerned, not concerned but aware. He needs to be aware."

Wallace, the team's leading scorer with a 20.6 points per game, was replaced in the starting lineup by Jared Dudley.