With a KO That Quick, UFC's Conor McGregor Did It for the Vine The entire UFC Featherweight match lasted less than 30 seconds, and McGregor swiftly ended Jose Aldo’s history of multiple-rounds fights. McGregor’s quick KO also put another notch in his new belt, it broke Ronda Rousey’s previous record for Fastest Title Fight finish. PinterestFacebookTwitter