Lineal Middleweight World Champion Canelo Alvarez (49-1-2, 34 KOs) and WBC/WBA/IBO Middleweight Champion Gennady “GGG” Golovkin (38-0-1, 34 KOs) shared a stage at the MGM Grand Resort and Casino for the first time since February earlier this year for the final press conference ahead of their highly anticipated rematch on Sept.