Andrew Bynum reportedly further injured knees while bowling

As the Philadelphia 76ers anxiously await the debut of Andrew Bynum, they may be frustrated to learn one of the reasons why the big man’s knees have been bothering him. According to ESPN.com, Bynum may have done additional damage to his knees when he suffered an “unspecified injury” earlier this month while bowling.

Bynum said on Friday that he suffered a “setback” with his knee, but it’s unclear if that setback is related to the supposed bowling injury.

“I had a little bit of a setback, and we’re just working through some issues with the right knee,” he said before the Sixers’ win over the Utah Jazz. “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.”

For those of you who are wondering, bowling is not an activity that is prohibited in Bynum’s contract — or likely any other player’s for that matter. The bowling report simply adds to what has been a frustrating few months since Philadelphia pulled off a blockbuster trade in August to acquire a piece fans hope they can build a championship around.

As far as weird injuries are concerned, at least Bynum didn’t hurt himself by punching a locker or something. You might be inclined to say he shouldn’t have been bowling, but come on — it’s bowling. What could go wrong?