User blog comment:Yeit/Gol D. Roger devil fruit???/@comment-178.128.30.22-20110225222439

he didnt ate the second gomu gomu no mi.oda said that the same devil fruit power doesnt exist in the same time twice.and that certain profesor will explAin what the df are about.shanks knew the name of the df luffy ate because it was out i the past and he saw it in a picture.that means that there is only ONE gomu gomu nomi.