Toshirō Daigo
Before his death, he was one of only three living Kodokan 10th dan (and one of only 15 to have attained this rank), having been promoted at the New Year Kagami biraki Ceremony, 8 January 2006, along with Ichiro Abe and Yoshimi Osawa. Biography. Daigo was born in January 1926 and educated at Tokyo University of Education. He was All-Japan Judo Champion in 1951 and 1954, and the author of "Kodokan Judo: Throwing Techniques", a definitive text on judo throws. Daigo died on 10 October 2021, at the age of 95.