Worst robbery ever is Jones/Park Si Hung. I mean its really the only fight I can think of where it was a COMPLETE mismatch, a COMPLETE domination, and the wrong guy got the win.

Runner up for me is Chavez/Whitaker. The first few rounds were reasonably close, but the rest of the fight was a Whitaker schooling. I don't see how anyone could give Whitaker any less than 9 rounds, but thats boxing for ya.