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Consider a world where Floyd Mayweather Jr. -- one of the most decorated boxers of all time -- is a rookie. To do that, you'd have to journey back to the '90s. Now, consider a world where a rookie Mayweather Jr. is dominated by another fighter and is killed in half a minute. To do that, you'd only have to journey to the octagon, according to UFC fighter Conor McGregor.

In an interview with Esquire, McGregor made it clear he doesn't think Mayweather Jr. would last long if the two were matched up against each other.

"I don't look at a man who's expert in one area as a specialist," McGregor told Chris Jones of Esquire. "I look at him as a rookie in 10 other areas. If you can box, what happens if I grab hold of your legs? If you put me face-to-face with Floyd Mayweather -- pound-for-pound boxing's best -- if I fought Floyd, I would kill him in less than 30 seconds."

McGregor has a pretty good idea of how his dominance would proceed.

"It would take me less than 30 seconds to wrap around him like a boa constrictor," McGregor said, "and strangle him."

McGregor has accumulated a 17-2 record in his UFC career. He also boasts some pretty intimidating body art, which gives us an idea of what Mayweather Jr.'s final view might look like if McGregor were to follow up on his prediction.

Recently, fellow UFC star Ronda Rousey aligned herself with Manny Pacquiao in the Fight of the Century. In addition to visiting Pacquiao, she also told ESPN that Pacquiao "presents some very unique problems that Floyd hasn't dealt with yet."

Clearly, Conor McGregor thinks the same of himself.

UFC's Conor McGregor doesn't feat Floyd Mayweather at all. (USATSI)
UFC's Conor McGregor doesn't fear Floyd Mayweather at all. (USATSI)