Floyd Mayweather Jr. celebrates after defeating Marcos Maidana by majority decision in their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena on May 3, 2014 in Las Vegas, Nevada. Mayweather took Maidana's title by majority decision. (Getty Images/AFP)
(R-L) Floyd Mayweather Jr. throws a right at Marcos Maidana during their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena on May 3, 2014 in Las Vegas, Nevada. (Getty Images/AFP)
(L-R) Floyd Mayweather Jr. and Marcos Maidana exchange blows during their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena on May 3, 2014 in Las Vegas, Nevada. (Getty Images/AFP)
(L-R) Marcos Maidana and Floyd Mayweather Jr. exchange blows during their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena on May 3, 2014 in Las Vegas, Nevada. (Getty Images/AFP)
(L-R) Marcos Maidana throws a left at Floyd Mayweather Jr. during their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena on May 3, 2014 in Las Vegas, Nevada. (Getty Images/AFP)
(R-L) Floyd Mayweather Jr. throws a right at Marcos Maidana during their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena on May 3, 2014 in Las Vegas, Nevada. (Getty Images/AFP)
Floyd Mayweather Jr. celebrates after defeating Marcos Maidana by majority decision in their WBC/WBA welterweight unification fight at the MGM Grand Garden Arena on May 3, 2014 in Las Vegas, Nevada. Mayweather took Maidana's title by majority decision. (Getty Images/AFP)