What If the Impossible Happens: What If Conor McGregor KO's Floyd Mayweather?

The Mount Rushmore of upsets.

Regardless of your generation or sport of choice, the top candidates for chiseled-granite immortality can probably be plucked from a similar crop of wannabes.

The New York Jets in Super Bowl III.

North Carolina State in the NCAA Final Four.

The U.S. men’s hockey team in the 1980 Winter Olympics.

And Buster Douglas in Tokyo against Mike Tyson.

SADAYUKI MIKAMI/Associated Press

Their images—Joe Namath’s finger wag, Jim Valvano’s hug pursuit, Jim Craig’s flag-draped search for his father and Iron Mike’s loopy reach for his mouthpiece—have for good reason lingered for decades past their final buzzers and bells.

But they all might be pushed aside come Aug. 27.

Should Conor McGregor fulfill his bratty Irish prophecy and actually land a knockout blow to the chin of unbeaten Hall of Fame-bound Floyd Mayweather, the next-day resonance from Las Vegas could reshape perceptions of upsets—and boxing itself—for several years to come.

Forget the odds, which have tangibly narrowed since the idea of the bout was initially floated, and just imagine the reaction you’d have if the superstar known as Money was laid out for a 10-count.

Mayweather, for all his faults, is a five-division world champion who’s won each and every one of his 49 bouts since turning pro as a precocious 19-year-old in 1996.

STAFF/Getty Images

Not only has his run equaled the signature numerical dominance established by ex-heavyweight champ Rocky Marciano from 1947 to 1955, but only one judge in his 23 distance fights has ever turned in a scorecard favoring his opponent.

That was Tom Kaczmarek, whose slight 115-113 lean toward Oscar De La Hoya in 2007 made that fight the only split decision on Mayweather’s otherwise unchallenged resume.

McGregor, meanwhile, has never boxed as a pro or amateur, rendering the very idea he can compete with a functioning Mayweather—let alone actually beat him, even at age 40—almost comical.

If it happens, though, the laughter from the “boxing is dead” crowd will be deafening.

And the scars incurred by the “boxing is king” crowd might be permanent.

“Boxing isn't new to me,” McGregor said at a recent media workout, via the Telegraph.

“I am no stranger to being the underdog on paper. I am a seasoned veteran and I am confident that I am the better man. After Saturday, August 26, I will be a god of boxing.”

Though some would dismiss a contrary result as a fluke, or try to rationalize it with claims that a too-old Mayweather didn’t take the challenge seriously, it’d be hard to come up with a substantive argument that’d override the casual fan’s image of the era’s greatest boxer losing to a guy in his first fight.

John Locher/Associated Press

To that end, too, no promotional hyperbole or manufactured menace would prevent UFC boss Dana White and Co. from claiming—with powerful evidence—that his octagonal empire is the gold standard of combat sports and boxing is little more than a less entertaining, four-sided diversion.

If Mayweather wins, McGregor can go back to the cage and dare his conqueror to take a similar risk and step outside of his comfort zone. But if McGregor wins, the debate is over before it begins and it’d be a long time—and it’d take a generational talent—to get the playing field anywhere close to level again.

Not exactly the best news for the likes of De La Hoya, a longtime Mayweather enemy whose operation is putting on a long-awaited middleweight fight between Canelo Alvarez and Gennady Golovkin three Saturdays after Mayweather-McGregor leaves town.

It’s been hard enough for those championship-caliber 160-pounders to get noticed since the Aug. 26 spectacle was officially announced and the subsequent press tour commenced, but if McGregor is 1-0 come that Sunday morning, the Golden Boy might want to consider a gig with a little more security.

Something in the communications department at the White House, perhaps.

“If you look at this thing and you look at how big this fight is and you look at how big these athletes are that are involved in this fight, if Conor does knock Floyd Mayweather out, he is the biggest athlete on earth,” White said, via MMA Junkie. “He’s the biggest athlete (on this planet), on other planets—he’s the biggest athlete. It’s pretty crazy.”

Crazy, it seems, would just be the start.