Mayweather at heaviest for Cotto fight

Floyd "Money" Mayweather Jr. is at his heaviest for his record guaranteed payday.

Mayweather tipped the scales at a career-high 151 pounds during Friday's weigh-in ahead of his fight against Puerto Rico's Miguel Cotto in Las Vegas on Saturday night.

Mayweather is certain to take home at least $32 million for his work at the MGM Grand Garden Arena, which represents a record guaranteed tally for a single fight in boxing history.

Mayweather's pay, confirmed by the Nevada State Athletic Commission based on advance pay-per-view sales, will be boosted as more and more people commit to the $69.95 HBO bout leading up to the first bell.

Fight promoter Richard Schaefer was tipping the fight to generate more than 1.5 million buys.

Cotto, who will be defending his WBA super welterweight title as the overwhelming underdog, was guaranteed a career-best $8 million. The 31-year-old (37-2, 30 KOs) weighed-in Friday on the limit at 154 pounds.

Mayweather, 35, (42-0, 26 KOs) is having only his second fight at light middleweight, five years to the day since he edged Oscar De La Hoya on a split decision, a fight that broke the record for single pay-per-view events.