Georges St-Pierre returned to the Octagon after four years away in the main event of UFC 217 last week to defeat Michael Bisping in the third round of their fight with a rear-naked choke technical submission to become the new UFC Middleweight Champion.
Not only was this Rush's first win since November 2013, but it also made the Canadian the fourth person in UFC history to become a champion in multiple divisions alongside Randy Coutre, BJ Penn, and Conor McGregor.
Naturally, following his dramatic win at UFC 217 over Bisping in his debut fight at middleweight, and the record which he managed to achieve on the night as well by becoming Middleweight Champion, many people have been quick to dub St-Pierre as the greatest MMA fighter of all time.
However, speaking on a press conference call on Thursday, according to The Score, the Canadian star was quick to dismiss these claims, as he doesn't think that title actually exists.
GSP said: "There is no such thing as the greatest of all time. Even though you are the best, it doesn't mean you can't lose and it doesn't mean nobody can beat you. For example, I fought Michael Bisping Saturday night at Madison Square Garden.
"On that particular night, at that particular moment, at that particular place I beat Michael Bisping, but that doesn't mean if I fight him tomorrow, he's not going to beat me."
St-Pierre went on to compare MMA to other sports where sometimes even the best teams don't always come out on top. While many feel that MMA is different and the better fighter will win each time, Rush believes this isn't always the case.
"People think fighting is different, 'This guy is stronger than that guy so he's always going to win'. That's not true. Maybe one day I will make a mistake and lose to a guy who's not as good as me. Maybe nine times out of 10 I will beat him. There's no such thing as the greatest of all time, it doesn't exist. It's an illusion."
After some much deserved time off, GSP's next fight with UFC is expected to be a unification fight with the interim UFC Middleweight Champion Robert Whittaker. If he wins that fight, more people are bound to be calling him the greatest fighter of all time whether he likes it or not.