He’s a retired American professional boxer, widely recognized as the best boxer of his generation and amongst the greatest fighters of all time. He is undefeated as a professional and is a five-division world champion, having won twelve world titles and the lineal championship in four different weight classes. He topped the Forbes and Sports Illustrated lists of the 50 highest-paid athletes of 2012 and 2013, and the Forbes list again in 2014, listing Mayweather as the highest paid athlete in the world.