Mexico 's Alvarez moved to 45 - 1 - 1 when he blasted out James Kirkland in three last month .
Mexico 's Alvarez is a former WBA and WBC super-welterweight champion and has only ever lost to Floyd Mayweather ( via a majority decision in September 2009 ) .
Mexico 's Alvarez , who is a former WBA and WBC super-welterweight champion and has only ever lost to Floyd Mayweather ( via a majority decision in September 2009 ) , moved to 45 - 1 - 1 when he blasted out James Kirkland in three last month .