How much will Mayweather & Berto be making tomorrow night when they fight @ MGM Grand, Las Vegas, Nevada, USA? According to figures released Thursday by the Nevada Athletic Commission, Mayweather will earn a guarantee of $32 million. Berto, will earn a career high @ $4 million. Floyd Mayweather has been the highest paid athlete in the world according to Forbes for the past few year. This will push him to be the highest paid again next year.