I'm no orthopedist, and I didn't stay at a Holiday Inn last night, but I know two things here that make me hope he drops a few pounds. First, F=ma, and all other things being equal, his body will undergo more stress, of all types, the heavier he is. Secondly, ligaments, tendons, cartilage, bones, ie. the more static structures of the body, can't grow or rejuvenate nearly as fast muscle or fat. Simply put, if he's picking up weight quickly, muscle or fat, his body's ability to compensate for the extra mass almost certainly has not kept pace and he could become more susceptible to injury. For a guy that wasn't really recruited due to a history of back problems, this is a legitimate concern. Fortunately, he's still really just a kid so who really knows. He could turn out to be The Rock, or a rock, I just want to have him be able to get out on the court to find out so it might not hurt if he was a little lighter.