However, what has left most MMA enthusiasts talking is that he pulled out a stunning new move that he's obviously been working very hard on.
In layman's terms, he started bashing his opponent in the head with his shoulder.
Well, it's a hard part of the body, if you're in the clinch it's got to be a decent option.
McGregor vs cerrone
Quick ko #UFC246 #McGregorCowboy pic.twitter.com/0MEl1faHhp
- andrewcudd (@andycudd) January 19, 2020
Now, 'The Notorious' McGregor is known for firing out of the blocks and winning quickly, but few could have foreseen the speed with which he dismantled his storied opponent in what was the Irishman's first bout in the heavier welterweight division.
It seems as if Cerrone was one of those people.
After the fight, he said: "I was like 'oh man, this happened this fast'. I got my ass whipped early!'
"He got me with his elbows right away and distorted me. Then he head-kicked me.
"I've never seen anything like that. He caught me way off guard. He busted my nose, it started bleeding, then he stepped back and head-kicked me."
That seems like a fair assessment, there.
However, the man who holds the records for most wins, most fights, and most finishes in UFC history vowed to return to the sport after this defeat.
He said: "Ah man, I love this sport. I'm going to keep fighting. I don't care, this is what I love man."
You can't fault the guy's attitude, that's for sure.
As for McGregor, this win removes any doubts that he can't do it anymore, and banishes the demon of his submission defeat to Khabib Nurmagomedov in his last fight.
After the fight, Conor assessed his future his own inimitable style. The self-styled Champ-Champ said: "It was a nice shot [with the shoulder], he wasn't expecting that. When we separated I saw the blood in his eye."
"I'm so happy. Who's going up and down divisions and stopping people like that?! The UFC can strip fighters [belts] and give other fighters make-believe belts in order to replicate my champ-champ status but they can't give knockout victories across multiple weight divisions.
"Etch my name in history one more time. For the Irish people, for my ma back home...I love ya to bits, I'm coming home with the win!!"
"I made history here tonight, I set another record. I'm the first fighter in UFC history to secure knockouts at featherweight, lightweight and now welterweight so I'm very proud of that.
"Donald holds the record for the most head-kick knockouts so I'm so happy to get him there with a head-kick myself."
As for his next fight, B.M.F. [baddest motherf***er] belt holder Jorge Masvidal and UFC welterweight champion Kamaru Usman are all on the menu for McGregor.
McGregor added: "Anyone of these mouthy fools can get it!"
Return of the Mac, indeed.
Featured Image Credit: PA