Sherk became the UFC’s lightweight champion in late-2006 by winning the vacant belt with a victory over Kenny Florian. Sherk successfully defended the title in July 2007 with a win over Hermes Franca, but tested positive for steroids after the fight and was stripped of the title and suspended for six-months. “The Muscle Shark” returned in May 2008 and immediately challenged BJ Penn for the lightweight belt, but suffered a third-round TKO. After winning “Fight of the Night” honors in an October win over Tyson Griffin, Sherk was defeated by Frankie Edgar via unanimous decision at UFC 98 in May.
Tibau, 5-4 since first-joining the UFC in late-2006, holds wins inside the Octagon over Jason Dent, Jeff Cox, Terry Etim, Rich Clementi, and Jeremy Stephens while losing bouts to Nick Diaz, Tyson Griffin, Joe Stevenson, and Melvin Guillard. He had won back-to-back fights over Clementi and Stephens, before losing to Guillard in his most-recent bout in June.
Mirko “Cro Cop” Filipovic vs. Junior dos Santos is expected to co-headline UFC 103 alongside a main event featuring Rich Franklin against an opponent to-be-announced. Mike Swick vs. Martin Kampmann, Josh Koscheck vs. Frank Trigg, and Efrain Escudero vs. Cole Miller are also rumored for the card.
[Pictured: Sean Sherk]