Conor McGregor: 5 biggest UFC fights

Conor McGregor: 5 biggest UFC fights McGregor vs Marcus Brimage: Brimage had the unfortunate pleasure of welcoming the Dubliner to the Octagon in April 2013 and it lasted all of just 67 seconds. McGregor vs Chad Mendes: "Rib-gate" took then UFC featherweight champion Jose Aldo out of a UFC 189 title clash with McGregor. Instead, the stout Irishman met the battle-tested Mendes, who proved to be a tough out for the former. McGregor vs Jose Aldo: No one saw this coming. "Junior" came out more aggressive than usual and his wild hook was effortlessly countered by a straight left from McGregor, making him the undisputed 145-pound champion. McGregor vs Diaz (both fights): After then 155-pound titleholder Rafael dos Anjos went down with an injury, Stockton's finest Nate Diaz more than just filled his void. Diaz and McGregor went on to produce two classic contests, with the series split 1-1. McGregor vs Alvarez: McGregor finally got the opportunity to become a two-division UFC champion when he met ex-Bellator king Eddie Alvarez in the UFC 205 main event. Alvarez proved to be no match and McGregor hoisted two belts at the end of the night.