Floyd Mayweather faces Manny Pacquiao in Las Vegas on May 2 . Mega boxing fight to become highest grossing pay - per - view event in sport . Mayweather 's fight against Saul Alvarez currently tops the list . American fighter will pocket upwards of £ 111 m if he goes the distance . fighters could earn close to £ 62 m if the fight last 12 rounds . note : Sportsmail takes a look inside both boxers ' training rooms . CLICK HERE for the latest Floyd fights and Manny Pacquiao wins .
Floyd Mayweather faces Manny Pacquiao in Las Vegas on May 2 . Mega-fight to become highest grossing pay-per-view event in sport . Mayweather 's victory against Saul Alvarez currently tops the list . American fighter will pocket upwards of £111m if he goes the distance . Pacquiao could earn close to £62m if the fight last 12 rounds . READ : Sportsmail takes a look inside both boxers ' training spots . CLICK HERE for the latest Floyd Mayweather and Manny Pacquiao news .