Clippers center Marcus Camby sat out the team's practice session on Saturday because of a hyperextended left knee.
Camby suffered the injury during a session on Friday.
"He came down on a rebound and there was no contact, no bumps," coach Mike Dunleavy told the Los Angeles Times. "He just landed wrong and went down to the ground, which was a little scary."
Dunleavy said that Camby is questionable for the team's preseason game on Sunday night.