Alvarez will defend his undisputed super middleweight title on May 6 in his native Guadalajara.
Gervonta Davis and Ryan Garcia are fighting April 22 because they refused to let boxing politics block a fight the fans desperately want to see.
Tim Tszyu, an undefeated Australian boxer, was supposed to fight Jermell Charlo on Jan. 28 for the undisputed super welterweight title. After Charlo broke his hand in training, Tszyu agreed to fight Tony Harrison in Australia on Saturday.