By Edward Chaykovsky

IBO/WBA middleweight champion Gennady "GGG" Golokvin (33-0, 30 KOs) views a potential fight with Floyd Mayweather Jr. (48-0, 26KOs) as the "biggest fight in the world."

Golovkin has been trying to secure a fight with Mayweather, who doesn't seem too interested in the fight. Mayweather will return on September 12th at the MGM Grand in Las Vegas - with the opponent reportedly being Andre Berto.

Golovkin is willing to drop down to 154-pounds for a fight with Mayweather. The pound-for-pound king has world titles, under the WBA and WBC, at welterweight and junior middleweight.

But Mayweather has not fought at the full junior middleweight limit of 154-pounds since May of 2012, against Miguel Cotto who even at junior middleweight is on the small side. Mayweather's fight against Saul "Canelo" Alvarez, in September of 2013, took place at a catch-weight of 152. That was the last time Mayweather fought above the welterweight limit.

"Right now this is the biggest fight in the world. He's a great champion. Look at me, I'm not big, I'm not fat. My couple of last fights - I was 158, 159. It's possible for me [to go down to fight him]. I would go to 154 just for Floyd. I understand that this is biggest fight in the world. This would show who is who, the best fighter in the world," Golovkin told Max Kellerman on Sports Nation.