Werdum vs Volkov headlines London Show

Fresh from a Fight of the Night win over Stefan Struve in September, Russia's Alexander Volkov will return to a main event once again on March 17, as he battles former heavyweight champion Fabricio Werdum at the O2 Arena in London.

Winner of five straight, the current run of the No. 7-ranked Volkov includes a trio of UFC victories over Struve, Roy Nelson and Tim Johnson. But the 29-year-old's greatest challenge is in front of him in the form of one of the best heavyweights of all-time, Fabricio Werdum. Currently ranked third in the division, Werdum has won two in a row over Walt Harris and Marcin Tybura, and in his first fight in London since stopping Brandon Vera in 2008, "Vai Cavalo" wants to make his case for a shot at regaining his heavyweight crown.