By Dan Ambrose: Canelo Alvarez posted a workout video of him on social media working on the heavy bag, preparing for Billy Joe Saunders or Gennadiy Golovkin. Canelo (52-1-2, 36 KOs) looked powerful working out on the heavy bag, and he’s working hard for his next fight against Saunders or GGG. Surprisingly, Canelo hasn’t commented […]