UFC 123 Video: Mark Munoz Ready To Fight Friend, Aaron Simpson

Mark Munoz and Aaron Simpson have known each other since college. They wrestled against each other, but then formed a friendship that sprouted into both of them deciding to pursue mixed martial arts after college.

Now, fighting in the same weight class for the same promotion, the two buddies will lock horns at UFC 123 in Detroit on Saturday night. Munoz says they both hesitated in signing the fight, but decided business is business.