Dajuan Wagner. Wasn't he supposed to be the next AI?
Stromile Swift? I remember him having loads of potential and yet he sucked.
How about Eddy Curry? I thought he and Tyson Chandler were supposed to be the next Twin Towers.
Or Hasheem Thabeet, the next Mutombo?
Greg Oden. Although, I'm not sure he could've really fixed his problems. Had he stayed healthy, his potential was through the roof. Same thing with Brandon Roy, not exactly his fault...
Donyell Marshall always struck me as someone who could've been a star (like a smaller Lamar Odom) but played stoned 99 percent of the time.
To a certain extent, what about Steph Marbury? The dude had super athletic potential but had no brain. He and Steve Francis were unstoppable in NBA 2k.