GGG and Kovalev did sparr and Golovkin was to Classy.!!! watch the 1.36 mark and Sanchez talks about it.!!! http://www.youtube.com/watch?v=K9pi6uYm6Jk
People who knee jerk with an automatic Kovalev should pay attention to this. I would really like to hear opinions from fighters who have sparred with both of them. It is really not inconceivable that Golovkin could hit just as hard if not harder than kovalev.