LAS VEGAS, NV – SEPTEMBER 13: Canelo Alvarez (L) and WBC, WBA and IBF middleweight champion Gennady Golovkin pose during a news conference at MGM Grand Hotel & Casino on September 12, 2017 in Las Vegas, Nevada. Golovkin will defend his titles against Alvarez at T-Mobile Arena on September 16 in Las Vegas. (Photo by Ethan Miller/Getty Images)