The UFC was probably just as surprised as anyone when Michael Bisping stepped in on short notice and knocked out former middleweight champion Luke Rockhold at UFC 199 in June. It was one of the biggest title-fight upsets in history, one that cemented Bisping as one of the best betting investments of all time.
But despite a cadre of capable challengers waiting for a shot at the new champ, the UFC put the division on hold to settle a longstanding rivalry between Bisping and the man who forever placed him on knockout highlight reels, Dan Henderson. Their rematch will end with Bisping's redemption in front of a home crowd in Manchester, England, or a repeat triumph of the UFC's oldest active legend on the biggest stage -- likely his last at age 46. In victory or defeat, Henderson has stated he'll retire after UFC 204 on Saturday, and that makes the main event must-watch TV due to all the plotlines involved. And viewers tuning in will likely be rewarded with more knockout highlights.