Joakim Noah suffered a dislocated shoulder during the Chicago Bulls' 83-77 loss on Friday.
Noah immediately grabbed his shoulder and screamed as it appeared to pop out of place.
Noah initially injured the shoulder during a Dec. 21 loss to the Brooklyn Nets and missed almost a month of action. An MRI showed a small tear in the shoulder, but Fred Hoiberg said several weeks later that he was confident that surgery would not be needed.
"He's down as he should be," Jimmy Butler said. "This is the game he loves. He wants to play for this team. Just being out with the same injury, something like that, I don't know what it is, but I know that he wants to be out there with us."
While the Bulls aren't sure what Saturday's MRI will show, Bulls players seemed to fear the worst.
"Anything can happen up here, man," Derrick Rose said. "We're saying that now this year. That's something that we never would have thought would have happened. But he's a big piece to our team. He is going to miss a little while now if it is dislocated. We just got to find a way to just grind games out. If we're up throughout the game we got to find ways to maintain the lead and play that way."