After defeating Manny Pacquiao in the "Fight of the Century," a much-hyped fight that fizzled on May 2, boxing fans are craving a challenge that will make "Money" Mayweather exciting again. One man who fits the bill is undefeated middleweight champion Gennady "GGG" Golovkin, who is going for his 20th straight knockout win on Saturday.

Golovkin has said Mayweather is a dream opponent, and that he'd be willing to go down to 154 pounds to face him. Even still, it seems unlikely that fans will get to see the generation's best defensive fighter against possibly it's greatest knockout artist.

"I would say something about this GGG. GGG, hey, if GGG can make weight, that would be different, but -- no, no, we not fixin' to fight no damn giant. I'm gonna tell you like this right here. He comes down, he be at 154, by the time he eats and fight that night, maybe 180, you just don't know, man. People can eat up stuff, man, and hey. He don't need to fight nobody like that, man," Floyd Mayweather Sr. said.

Lest his comments be construed as saying Mayweather Jr. is afraid of Golovkin-and many feel Mayweather feared Pacquiao years ago when both were in their primes-Mayweather Sr. said he thinks his son would defeat Golovkin by running him ragged.

"Now they say that Floyd won't beat him, but I'm just telling you because, the guy is probably just so big and strong, man. Floyd probably, all he would be doing is, he'd take a lot of punches. He'd come in, Floyd would run the stuff off of him. But the whole thing is, it'd be a struggle, but Floyd probably could beat him. I can't say that he can't beat him."

Instead, Golovkin will likely have to continue beating the best middleweights available to him until big name boxers like Canelo Alvarez and WBC middleweight champion Miguel Cotto run out of alternatives.