Dan wasn't too far removed from competing in early shootfighting at that time. I have some old footatge of him competing in the UWF in Japan. It predated Pancrase - but was often filled with worked fights. That said - there were still many skilled fighters to compete in the org and the great Lou Thesz offered color commentary.
its gotta be royce gracie doesnt it???.. i cant even remember whether hes landed a kick, punch or knee while standing.. and if he did it damn sure wouldnt have hurt..