UFC® star Sean "Muscle Shark" Sherk will be at The X Fights Extreme 1 Event on Jan 23rd. Sherk has fought in both the UFC® and PRIDE® Fighting Championships, and is a one-time UFC® Lightweight Champion. He recently defeated Tyson Griffin in a hard found battle during UFC® 90.

Sean will be signing autographs before the fights, so show up early. Meet the man who familiarized us with the now famous "caveman workout". (Check it out on youtube if you haven’t seen it already). Sherk has an outstanding professional record of 37-3-1.