Conor McGregor beat Chad Mendes by TKO with just three seconds of the second round remaining in their UFC 189 bout.
McGregor was dominated on the ground in both rounds but once they were standing up, the Irishman did serious damage to Mendes.
He decked the American with less than 20 seconds left in the second round with a big straight left hand.
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He then went in for the kill.
Herb Dean called a halt to the fight with just three seconds to the bell.
McGregor is now interim UFC featherweight champion.
