UFC 194 : Conor McGregor knocks out Jose Aldo 13 seconds

In one of the most stunning and electrifying finishes in the history of combat sports, Conor McGregor dropped rival Jose Aldo Jr. just 13 seconds into the opening round of their UFC 194 main event.McGregor sidestepped a charging Aldo and landed a magnificent left hand to the jaw, which stopped Aldo cold. McGregor landed a couple brutal hammer fists to the downed Aldo before referee John McCarthy called off the fight.A pro-McGregor crowd filled the MGM Grand Garden Arena for the big showdown, and seconds later they were in dreamland. A MASSIVE left hook drilled Aldo, who fell immediately. McGregor threw hammerfists on the ground and Aldo was out cold. It was just about the first punch McGregor threw, and Aldo was finished.