OAKLAND -- Warriors center Andrew Bogut said Monday after being ruled out for the 76ers game that he has a bone bruise and swelling in his left shoulder and that coach Mark Jackson's comment that the injury may have been caused by sleeping was "absolutely ridiculous."

Bogut said he hurt the shoulder while playing Jan. 31 in a win at Utah, began getting soreness the day after and played through the discomfort in Tuesday's loss to Charlotte. He said he woke up in pain the following day and thought, "It's really killing me." An MRI exam later revealed a bone bruise and swelling, Bogut said.

"It's gotten worse and worse, so I just wanted to address it," Bogut said. "The sleeping comment is absolutely ridiculous. I don't know where it came from."

"It's definitely not the case I just woke up, slept on my shoulder wrong and have a bone bruise and swelling in my shoulder from sleeping, very highly unlikely I believe."

Jackson said before the game he did not know how Bogut got hurt before offering these comments:

"As far as I know, it was not on the court," Jackson said. "It wasn't in practice. It wasn't in a game. I'm not really sure. It may have been sleeping, and I say that in all seriousness, but it's important for us to make sure we continue to treat him, it's legitimate, and then let's be smart with it. We're looking ahead at a whole week of rest and recovery, and we need him."

The apparent miscommunication comes at a time when reserve center Jermaine O'Neal also will miss the game because of right wrist inflammation, leaving a banged-up David Lee to return to the lineup at center.

"We have only two games left before the (All-Star) break," said Lee, who has been battling a shoulder sprain and hip strain. "With a couple other guys down right now, I think it's important to finish off strong, so whatever I can give, I'll try to give."

Lee missed the team's previous two games even though he said the shoulder and hip continue to be "nagging" him. Forward Draymond Green will make his third consecutive start.