Career
Iizuka started judo training at Keio Gijuku in 1889, but broke off his training the following year to attend naval academy in Tokyo. Although the academy had no judo club, Iizuka saw a man carrying a judogi one day, and followed him to the Kodokan. He enrolled as a student there in November, 1891.
In 1906, Iizuka returned to Keio to take a job as judo coach to Keio University, where he taught Kaname Kuniyuki, Chuji Sakata and Yoshio Sugino, among others
He was one of the first of Jigoro Kano"s students to be awarded a judan (10th-dan) ranking, in 1946.