Canelo Alvarez, center, poses with a birthday cake presented to him by Dallas Cowboys owner Jerry Jones, left, and Oscar De La Hoya during a news conference promoting a fight between Alvarez and Liam Smith in Arlington, Texas, Monday, July 18, 2016. Alvarez and Smith will fight for the WBO Junior Middleweight Championship on Saturday, Sept. 17, 2016. (AP Photo/LM Otero)
Canelo Alvarez, center, poses with a birthday cake presented to him by Dallas Cowboys owner Jerry Jones, left, and Oscar De La Hoya during a news conference promoting a fight between Alvarez and Liam Smith in Arlington, Texas, Monday, July 18, 2016. Alvarez and Smith will fight for the WBO Junior Middleweight Championship on Saturday, Sept. 17, 2016. (AP Photo/LM Otero) LM Otero AP
Canelo Alvarez, center, poses with a birthday cake presented to him by Dallas Cowboys owner Jerry Jones, left, and Oscar De La Hoya during a news conference promoting a fight between Alvarez and Liam Smith in Arlington, Texas, Monday, July 18, 2016. Alvarez and Smith will fight for the WBO Junior Middleweight Championship on Saturday, Sept. 17, 2016. (AP Photo/LM Otero) LM Otero AP