Brooklyn, NY (SportsNetwork.com) - Brooklyn Nets guard Deron Williams is out indefinitely after suffering a rib injury.

Williams underwent an MRI exam Thursday and was diagnosed with a fracture of the cartilage portion of the left 12th rib. He will be re-examined in a week.

"Deron reported some soreness over the weekend and as a result underwent imaging studies on Monday, which were negative," Nets medical director Riley Williams III said in a statement released by the team on Thursday. "During (Wednesday's) game, he reported a new set of symptoms below the prior area of soreness. New imaging studies done (Thursday) demonstrated the fracture."

Williams has appeared in 32 games this season, starting 25. He is averaging 13.9 points, 6.3 assists and 3.0 rebounds.