Saturday’s card

Main Event: Gennady Golovkin (37-0, 33 KOs) vs. Canelo Alvarez (49-1-1, 34 KOs); Golovkin defending his World Boxing Assn., World Boxing Council and International Boxing Federation middleweight belts. When: Saturday 5 p.m. Where: T-Mobile Arena, Las Vegas.

Television: HBO pay-per-view, $79.95.

Undercard: Joseph Diaz Jr. (24-0, 13 KOs), South El Monte, vs. an opponent to be announced, featherweights; Randy Caballero (24-0, 14 KOs), Coachella, vs. Diego De La Hoya (19-0, nine KOs), Mexico, super-bantamweights; Ryan Martin (19-0, 11 KOs), Chattanooga, Tenn., vs. Francisco Rojo (19-2, 12 KOs), Mexico, lightweights.