GGG vs Canelo 2 undercard CONFIRMED: Spike O’Sullivan and Jaime Munguia both in BIG fights 0 21 20 Aug 2018 21:07 Express.co.uk (boxing) GENNADY GOLOVKIN and Canelo Alvarez will headline the show in a much-anticipated rematch next month but promoter Oscar De La Hoya has confirmed three more mouth-watering fights for the undercard.