Are you on crack? GSP fights at 170 all the time which is what he weighed in at. GSP did not cut any weight for the fight. Last time I checked Hughes beat Penn the last time Penn decided to jump up a class and GSP destroyed Hughes. GSP fight 170 pounders all the time. Penn has also, but with limited success. Say what you want, but to say Penn is going to kill GSP, you are wrong. This will be a great fight, but GSP will win.