Davis played only seven minutes, scoring eight points and grabbing one rebound, before leaving with 5:30 left in the first quarter, complaining of pain in his chest after a free throw by Cleveland's Kevin Love. Team officials could not immediately specify how or when the injury occurred, but Pelicans spokesman Matt Ryan called the injury a chest contusion from an apparent collision with another player's elbow.
"I just know when he was on the bench he was wincing as if he couldn't breathe, so I was hesitant to put him back in the game," Pelicans coach Monty Williams said. "We watched him for a while, and he took himself out. That's when I knew he didn't feel right."
Davis entered the game averaging 25.1 points, 10.6 rebounds and 2.9 blocks.
"This was a game that we knew that we had to fight extra hard without [Davis]," Anderson said. "This was a huge win for us so I'm really happy with the way we played."
Williams said he hoped to know more about Davis on Saturday. The Pelicans play Sunday against Golden State.
The Associated Press contributed to this report.