He has proven himself... He held his against Bernard Hopkins who was then p4p king of the world. THen he has a draw with second ranked p4p WInky Wright. Every single one of his last three fights could have gone either way, and he isn't just some chump... I would back him against Calzaghe, Sturm, Abraham, Mundine in a second. He is fast, powerful, and skilled at fighting the way he does.