I also didn't see Hopkins change anything in his rematch against Taylor. I think he should have come forwad more, look at the trouble Bika gave Calzaghe in parts of that fight. Calzaghe gets even less power out of his punches going backwards, and he doesn't as many straight punches. Hopkins in his prime wasn't just a cerebral fighter like Roy Jones Jr or James Toney were, He was a physical beast that would rough you up, and still have the technique to outbox you, I think he showed that to perfection against Echol, even when he badly pulled his shoulder he was still totally owned Echols, and that is a much worse injury IMO that even a broken hand because you can still punch effectively with a broken hand, but you can't with a badly hurt shoulder.