If he looked stale that's because Hopkins made him look stale. The weight might have affected him but all in all he has bad footwork and Hopkins took advantage of this by turning him at every opportunity and making him reach on his right hand. If he stays at 160 he'll have a long title reign with plenty of knockout wins. I feel bad for him but even worse for Marco Antonio Rubio who'll likely be his next opponent. I'd hate to be the first guy to face Pavlik after a defeat.