Floyd Mayweather Jr. lands a punch against Canelo Alvarez in the eighth round during a 152-pound title fight, Saturday, Sept. 14, 2013, in Las Vegas. (AP Photo/Eric Jamison)
Floyd Mayweather Jr. lands a punch against Canelo Alvarez in the eighth round during a 152-pound title fight, Saturday, Sept. 14, 2013, in Las Vegas. (AP Photo/Eric Jamison)
