Yes, those Dolphins’ players were part of the undefeated NFL team. The Memphis WFL team was nicknamed the Southmen after relocating from Toronto (Northmen). The team relocated, as I recall, because of political legislation passed in Canada which forbade U.S. football teams from playing there.
As far as the NASL soccer reference, I was making a joke to add to your earlier reference but I think I missed :-)
>>As far as the NASL soccer reference, I was making a joke to add to your earlier reference but I think I missed :-)<<
Yep — I didn’t know what NASL was so I just bluffed my way through :)