Yes. I'm a big fan of triple G. He's a classical looking fighter with phenomenal power. Devastating upper cut and an over the top left hook carrying massive power finished the fight.
The only fight at his weight is Cotto but they don't see Cotto taking it on as he may drop down. This leaves GGG to either go up to Froch, Ward, etc. or down to welterweight with Khan, Pacman, Floyd, etc. Can't see anyone, even Floyd taking him on. So, I agree, it leaves just moving up.
