Gortat hurt his back during pregame warmups and left the court wincing. He was helped to the locker room by a trainer. It was the first game he's missed this season.
Gortat is averaging 12.8 points and 9.3 rebounds per game. He has 28 double-doubles this season.
In Washington's 117-111 overtime loss at Sacramento on Tuesday, Gortat had 19 points and 14 rebounds.