Conor McGregor becomes 1st fighter to hold 2 UFC titles

Conor McGregor became the first UFC fighter to hold two titles simultaneously. (Photo: AP)

Alvarez's attempts to take the fight to the mat were thwarted by the 28-year-old, who continued to dictate the pace in the second in front of a packed house, most of whom were cheering for the Irishman. (Photo: AP)

Midway through the second round McGregor unleashed another combination and this time there was no way back for Alvarez as McGregor pounced to finish the fight. (Photo: AP)

Southpaw McGregor downed Alvarez three times in the opening round, leaving the champion stunned and on the back foot for the entire five minutes, and it didn't get any better for the Philadelphia native. (Photo: AP)

While others on the bill failed to live up to it, McGregor once again proved his value to the UFC by putting on a spectacular show with another superb knockout win. (Photo: AP)

"I'd like to take this chance to apologise ... to absolutely nobody," McGregor roared before taking his two belts and scaling the side of the octagon to celebrate. (Photo: AP)