According to a report by ESPN.com's Brian Windhorst and Chris Broussard, citing multiple sources, Sixers' All-Star center Andrew Bynum "suffered an unspecified injury this month while bowling."

The report states that Bynum "might have done additional damage to his knees while bowling, according to sources close to the situation."

Bynum, who according to the report enjoys bowling, has yet to practice with the Sixers this season. He was slated to be reevaluated for the bone bruise to his right knee on Dec. 10. Before Friday's game against Utah, Bynum revealed a setback to his left knee.

"I had a little bit of a setback, and we're just working through some issues with the right knee," Bynum said on Friday night. "I kind of have a mirror thing going on with my left knee. I don't know what's going on, but the doctors are saying pretty much that it's a weakened cartilage state."