#4 Fedor Emelianenko
Even despite unsuccessful acquisition-negotiations with the UFC, Emelianenko made his presence felt in almost every other major fighting promotion. Hailed as one of the fore-runners of the heavyweight oeuvre, Fedor is known for claiming the Pride Fighting Championships from Antonio Nogueira in March 2003 (and he never relinquished it!) Despite not competing in the UFC, as mentioned, the sambo exponent has defeated four former UFC champions- a list that includes the names of Mark Coleman, Tim Sylvia, Andrei Arlovski and Kevin Randleman.
Edited by Shiven Sachdeva