data-mm-id=”_143he3okv”>Conor McGregor knocked out Donald Cerrone quickly in his return to the octagon at UFC 246. McGregor came out firing quickly and absolutely obliterated Cerrone quickly, finishing the fight in just 40 seconds.Check this out:WOAHHHH pic.twitter.com/q08sxO7YbV— ???? ✌? (@ALBY_LAD) January 19, 2020"The Notorious" appeared to break Cerrone's nose with a shoulder strike in the clinch just seconds into the fight, then landed several strikes that sent Cowboy to the canvas, including a huge left high kick. With Cerrone down, McGregor poured on the pressure and finished him off. Referee Herb Dean stepped in to stop proceedings just 40 seconds in to the first round. It officially goes down as a TKO victory, sending McGregor's record to 22-4 with 19 k…