By Bill Emes

Roger Mayweather, trainer and uncle of Floyd Mayweather Jr., explained why his nephew is the "second greatest fighter of all-time." Roger ranks boxing legend "Sugar" Ray Robinson as the greatest fighter in the history of the sport. The outspoken trainer believes his nephew, who won titles at 130, 135, 140, 147 and 154 - is the second greatest. Mayweather faces WBA 154-pound champion Miguel Cotto on May 5th at the MGM Grand in Las Vegas.

"[Floyd] is ranked right behind Sugar Ray Robinson. He won seven world titles didn't he? He beat everyone from 130 to 154. Where would you put him at? Ray Robinson is the greatest ever period. I don't care what circumstance, Ray Robinson is the greatest fighter in the history of boxing," Roger said.

"You know what his record was?....127-1. Do you know any other fighter with a record of 127-1? And the fighter that beat him.....[Robinson] beat him six times....Jake LaMotta. And the only reason he beat Robinson, is because he outweighed him by like 50-pounds. And Ray Robinson wasn't even really a middleweight fighter but slowly he started putting that weight on and then he smoked [LaMotta] every time."

"There is no fighter in the history of boxing to do what Ray Robinson has done. But, fighters don't fight that often anymore, [every] two weeks, three weeks, four weeks. Now they have that whole medical sh*t. Fighters can't fight as often as they fought back in those days."

"[Floyd] already broke records with less fights [than Ray Robinson]. Ray Robinson only stayed in two divisions. Floyd started at 130, then 135, 140, 147 and 154. He already done what Ray Robinson [has] done in 42 fights."