Conor McGregor took just 13 seconds to stop Jose Aldo at UFC 194.
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McGregor's second punch of the fight, a left hook, connected with the jaw of the Brazilian and he hit the canvas.
Even before the Dubliner added the finishing touches with two hammer fists, referee John McCarthy was making moves to intervene and stop the fight.
It is the fastest ever UFC title bout finish, beating Ronda Rousey's 14 second stoppage of Cat Zingano.
