Jose Aldo, Max Holloway and Dustin Poirier. Three huge names in the UFC that have all fell victim to Conor McGregor in their sole contests against the Irishman.
Since then, the Notorious has ventured into the sport of boxing where he was defeated by Floyd Mayweather, sandwiched between victories over Nate Diaz and Eddie Alvarez with his recent Octagon ending in a neck-crank submission loss.
Recently, bad blood spilt over to social media between the former champ-champ and current featherweight king, 'Blessed' Holloway.
Many fans believe a fight between the pair would unfold much differently now compared to their younger days, with a rematch a distinct possibility as Holloway is stepping up to the lightweight division to challenge The Diamond.
The winner will be crowned the interim lightweight champion.
Recently, during a Q&A session in Chicago, McGregor admitted that Aldo, Holloway and Poirier all deserved rematches - while explaining a rematch with the undefeated Dagestani must also happen as well.
McGregor stated that the trio have fought back from adversity and climbed back up the rankings, while even admitting that he thought about stepping in at UFC 237 to take on Aldo, just under four years after infamously snatching the featherweight championship from him with a devastating 13-second knockout.
According to BJPenn.com, he said: "On the other side, if you beat a man convincingly, a first-round KO, a dominating performance, there’s not really a need for a rematch,” McGregor stated.
“But, if that individual rises up the ranks, if he goes back, checks himself, humbles himself, stays focused, stays positive, and rises up exactly like Dustin Poirier has done, and exactly like Max Holloway has done, well then there is rematches deserved
"Even Aldo now currently, he had a great win, his last two wins were great wins.
"He had a little bit of a slip, but he’s had two great wins and now he’s fighting in his hometown of Rio De Janeiro. I actually was thinking I might slide in and face him, but all these politics and co-main event conversation kind of halted that as well.
"If he wins, I believe he’s up in line for a rematch also. Although it was a 12-second knockout, I still think if you rise up again, you deserve a rematch. So, this is where we are at."
It's the same session where McGregor took aim at Mayweather about a rematch, criticising Joe Rogan's commentary work in the UFC and also requesting shares in the organisation if they want him to feature in a co-main event slot.
If Aldo - who has now been hospitalised ahead of his UFC 237 clash against Alex Volkanovski - can pull out with another victory, then McGregor will once again have a plethora of exciting options on his place.
What do you make of Conor McGregor's thoughts on a Jose Aldo rematch? Have YOUR say in the comments section below.