Floyd Patterson faces Canelo Alvarez on HBO in a battle of undefeated fighters . Patterson is 44 - 0 with 26 knockouts and Alvarez De La Hoya wo n't be at the MGM Grand supporting his charge , though , having entered rehab this week . is 42 - 0 - 1 with 30 knockouts . Mayweather is expected to receive $ 41.5 million , the biggest payday in the sport 's history . Oscar De La Cruz , Alvarez 's promoter , will be absent in Las Vegas as he entered rehab .
Floyd Patterson faces Canelo Alvarez on HBO in a battle of undefeated fighters . Patterson is 44 - 0 with 26 knockouts and Alvarez is 42 - 0 - 1 with 30 knockouts . Mayweather is expected to receive $ 41.5 million , the biggest payday in the sport 's history . Oscar De La Cruz , Alvarez 's promoter , will be absent in Las Vegas as he entered rehab .