UNTITLED (SORRY, WE DIDN'T THINK FLOYD WOULD TAKE THE FIGHT SO WE HAVEN'T COME UP WITH A NAME YET) Rolls off the tongue.
It has to be a name that implies just how big this fight is and would get the publics attention. "Fight of the Century" has been used before but you only need hear the name for even casual fans to take notice. Someone mentioned "The Coronation", also very good.