22. Mauricio “Shogun” Rua (26-11-0)
Another lethal finisher on our list, 21 of his 26 victories have come from KO or TKO. Shoguns gifts in Muay Thai have allowed him to beat some of the best fighters in the UFC and Pride. The light-heavyweight champion had heavyweight hands, knocking out or TKOing Chuck Liddell, Forrest Griffin, Lyoto Machida, Mark Coleman, and Alistair Overeem twice by punches.