I'm pretty sure that all greatest middlweights would be proud that are represented today by Golovkin. Marvelous Hagler is one of them.:good
Leonard is one of the greatest welterweights ever, not middleweights. GGG has a long way to go to being rated up there with the greatest middleweights ever.
Odds are he is cut from a similar cloth though I think most objective fans would agree his level of comp can't really support your statement. When he does step up I'm confident he will show us he can be mentioned along side the Hopkins, Haglers and Monzons
Easily the main reason why I haven't ventured these boards in a consistent basis anymore.....any logic used to defend such a ridiculous statement should be left for the other delusional airheads who live vicariously through GGG man sac.