is a Japanese actor, director, fight choreographer, and stuntman. He is best known for his role in Ryuhei Kitamura's cult film, Versus. Since his debut, Sakaguchi has worked with Kitamura several times, often appearing alongside fellow Kitamura staple Hideo Sakaki. He has also worked with frequent Kitamura collaborators Yudai Yamaguchi and Yuji Shimomura. Sakaguchi is a talented martial artist, and most often appears in films featuring copious fight scenes, usually performing all of his own stunts. He is purportedly skilled in Bajiquan, Shorinji Kempo, boxing, and kick boxing.