The super undercard of the Gennady "GGG" Golovkin (38-0, 34 KOs) v. Canelo fight includes former world champion "Chocolatito" Gonzalez, David Lemieux, Gary "Spike" O'Sullivan, WBO Junior Middleweight Champion Jaime Mungia, Brandon Cook, and Dallas, Texas' Virgil Ortiz, among other fighters in Las Vegas.