[1] Before becoming a professional wrestler, Sakaguchi was a judoka with a fifth degree black belt and won the 1965 All Japan Judo Championship.

Coach Koji Sone was accused by Anton Geesink's teammates in the 1965 World Judo Championships of having Sakaguchi throw the match against the more rested Matsunaga in order to allow Matsunaga take on the weary Geesink in the final round.

[2] Sakaguchi debuted in August 1967 for the Japan Wrestling Association.

At age 61, Seiji Sakaguchi came out of retirement to team up with Masahiro Chono against Yoshihiro Takayama and Shinya Makabe on September 14, 2003.

His role was a minor one, though he did appear in the film's climactic fight scene, battling star Chuck Norris.