It was Kinniku (Unbeatable) Banzuke, AKA Muscle Ranking, that actually gave birth to Sasuke/Ninja Warrior. The early Sasuke tournaments had one or more MR logos in place on the Mt. Midori course.
/Yeah, I miss the original NW too
//Especially since Tokyo Broadcasting won't allow uploads to YouTube anymore
///And there's no US TV outlet for it now