Jesse Feliciano from around 2006 disturbed me greatly. I thought he was going to break his arm every time he threw a hook.
Ponce De Leon was the first name that came up when reading the thread title. I'm really surprised only one of his opponents has been able to exploit that:think
Ponce De Leon Maussa Urango Williams Ruiz Hatton (since WBU days) Skelton Hopkins (old version) Peter
Thats more along the lines of defensive flaws. We are talking about punching here right? I think Ricky Hatton has solid technique to his punches. But defensively he lets himself go when he punches.