Perhaps there are more cases of fighters who lost their power due to bad hands but later got it back. Gene Tunney is a prime example.
I think Calzaghe's were more due to him overwhelming opponents than actually knocking them out. He only has 2 actual KO's on his record, the rest being TKO's. That said, he was a lot heavier handed than he is now.
I'm sure Sonny Liston always had power, but his KO percentage early on wouldn't suggest it. Junior Witter can crack, but he didn't score many KOs early on.
What's with this myth about Calzaghe being able to bang early on in his career? Of course the guy has bad hands but he's never been a big hitter.
Poor choice of words. He could hit harder earlier on. Coupled with his frantic workrate he was scoring far more stoppages than he would later on in his career when he started hitting open palm.
Palomino while never reaching banger status certainly improved his power during his early break from boxing.
Sandy Saddler hardly scored any knockouts in his first couple dozen fights, but eventually developed into one of hte biggest punchers in his division's history.