As has been said countless times on this site, one of the most beautiful aspects of Mixed Martial Arts as a sport involves the inherent unpredictability of fighting. All it takes is one punch, a split-second mistake on the ground, or an untimely injury to turn an underdog into a winner or even champion. UFC 165 isn’t likely to be an exception to the rule, and though it’s impossible to know exactly who will be left standing when the smoke clears on September 21, there’s no doubt a few upsets are on the horizon. (Photos by USA Today Sports Images)