On Sunday, Lakers forward Ron Artest played in his fourth game since missing five with a concussion.

After less than 20 minutes of action, there was some concern about Artest following a collision with Milwaukee's Michael Redd.

Artest asked for some rest about colliding with Redd.

"[Sunday] was kind of an interesting night," Lakers coach Phil Jackson. "[Artest] had banged his head and I think it affected his game, when he went down with Redd early in the ballgame, no doubt ... He asked out -- he asked out of the ballgame twice over the course of that first and third quarter, so I put Adam [Morrison] in early, and gave him a little time to recover."

Jackson admitted that Sunday's events could lead to Artest being re-evaluated. He suffered a concussion on Christmas night when he fell down some stairs at his home.

"We'll discuss that," the coach said. "We'll talk about it with our staff a little bit. Most of it's about the inner ear and balance, you know, what's going on. I think that he may have felt a little dizziness or something afterward. He said he was OK, but then when he asked out of the third quarter, he mentioned that if this was a blowout, he'd just as soon not go back into the ballgame."