NBA: Arenas out of starting lineup!

Gilbert Arenas injured his left knee in a collision with Gerald Wallace in the first quarter of Wednesday night's game against the Charlotte Bobcats.

Wallace fell into Arenas as the Bobcats forward completed an acrobatic reverse layup along the baseline late in the first quarter. The contact bent Arenas' knee awkwardly as he fell to the court.

Arenas had been in the game less than two minutes. He did not start for the first time this season because he was late for the team's shootaround.

Arenas, the Wizards' leading scorer and three-time All-Star, was averaging 28.8 points entering Wednesday's game.

The Wizards were already playing without All-Star forward Caron Butler, who broke a bone in his hand during Sunday's loss to the Milwaukee Bucks.

Antonio Daniels made his first start of the season against the Bobcats. Arenas was not on the court with his teammates for the national anthem but arrived at the bench before tipoff.

It was the third starting lineup change in three games for the Wizards. Center Brendan Haywood was benched in favor of Etan Thomas on Sunday, and Jarvis Hayes has started at small forward since Butler's injury.