Doc Rivers said after Friday night's Game 6 win over the Magic that he's concerned about Rasheed Wallace.

Wallace, who has battled a bad back, left Friday's game early with back spasms and did not return.

Rivers was asked after the game how point guard Rajon Rondo, who took a hard fall in the first quarter and spent a majority of the second on the sideline with ice on his back, was doing, but he expressed worry about Wallace.

"Yeah, he's going to be okay, I'm more concerned with Rasheed, honestly," Rivers said. "Rasheed got tight, you could see it. I will say this about Rasheed and Baby neither one of them was in great shape tonight. You could see that.

"Rasheed could not move. He looked old tonight because of his back. And I told him when he came back. You could see him in pain, and I said thank you for giving me the minutes you gave me, so that's our concern but we have time, so I think by Thursday we'll be good."

The Celtics will next play on Thursday against either the Lakers or Suns in Game 1 of the NBA Finals.