MIAMI - Shaquille O'Neal was inactive for the Heat's game against Denver because of a hyperextended left knee, his second injury to the knee this season.

Miami Heat's Shaquille O'Neal fights for the ball with Houston Rockets' Yao Ming in Miami, November 12, 2006. [Reuters]

O'Neal's status is day to day, the Heat said. He was hurt in a collision Sunday with Houston's Chuck Hayes, who is expected to miss up to two weeks with a bruised and hyperextended left knee.

O'Neal missed the third and fourth games of the season with a bruised knee. He has averaged 14.0 points and 7.5 rebounds in four games.

Alonzo Mourning replaced O'Neal in the starting lineup against Denver.

The Heat decided to delay activating guard Jason Williams for at least one more game. He has yet to play since undergoing arthroscopic knee surgery July 21.

"A couple of more practices, and I think I'll be ready," Williams said.