Teachers (1)

• 
  Yokoyama Sakujiro

  sports_martial_artsKōdōkan Jūdō Probable

  Probable

  Documented as a student at the Kodokan from 1891, with specific enrollment date recorded in historical records

  The evidence favours the claim and nothing credible contradicts it, but it falls short of establishing it.

  location_onKodokan badge (1891)

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source expand_more

  fact_check

  Documented as a student at the Kodokan from 1891, with specific enrollment date recorded in historical records

  “one day he saw a man carrying a judo uniform and followed him to the Kodokan. There he applied for entry, was found acceptable, and signed its enrollment book on November 23, 1891 [...] Sakujiro Yokoyama was head instructor.”

  — Judo: Kunisaburo Iizuka (Journal of Combative Sport, July 2002)link

Lineage

• Kōdōkan JūdōYokoyama Sakujiro ← Kanō Jigorō · 2 generations

Ranks (1)

• sports_martial_artsKōdōkan Jūdō

  military_tech10 dan Confirmed

  Confirmed

  Officially awarded 10 dan by Kodokan in 1946, well-documented in multiple historical sources, including academic articles

  The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.

  Dan-Kyu System (1946)

  granted by Kodokan

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  2 sources expand_more

  fact_check

  Officially awarded 10 dan by Kodokan in 1946, well-documented in multiple historical sources, including academic articles

  “1946年（昭和21年）、最高位の十段に列位した。”

  — 飯塚国三郎 - Wikipedialink history

  “Iizuka received promotion to 9-dan on December 23, 1937. His 10-dan ranking came on May 4, 1946”

  — Judo: Kunisaburo Iizuka (Journal of Combative Sport, July 2002)link

Students (2)

• 
  Kenneth Kuniyuki

  sports_martial_artsKōdōkan Jūdō Confirmed

  Confirmed

  Well-documented in USJF biography with specific dates 1931-1932 studying under Kunisaburo Iizuka in Tokyo

  The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.

  location_onKeio University badge (1931–1932)

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  2 sources expand_more

  fact_check

  Well-documented in USJF biography with specific dates 1931-1932 studying under Kunisaburo Iizuka in Tokyo

  “From 1931 to 1932 Kenneth studied under Kunisaburo Iizuka, 8-dan, and original student of Kano Sensei in Tokyo, Japan”

  — Kenneth Kuniyuki - USJFlink

  “In 1932 he went to Japan to train at Keio University under the instruction of Kunisaburo Iizuka, 8 dan at the time”

  — Asian Americans who've made a difference - Shoyu Zinelink
• person
  Sugino Yoshio

  sports_martial_artsKōdōkan Jūdō Confirmed

  Confirmed

  Studied judo under Kunisaburo Iizuka at Keio University from 1918, documented in Aikido Journal with specific details about training and Iizuka's 8th dan rank at Kodokan

  The evidence establishes the claim: it is sufficient and consistent, and any conflicting evidence is resolved.

  location_onKeio University badge (1918–1919)

  fact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  2 sources expand_more

  fact_check

  Studied judo under Kunisaburo Iizuka at Keio University from 1918, documented in Aikido Journal with specific details about training and Iizuka's 8th dan rank at Kodokan

  “While at Keio, he began studying judo under Kunisaburo Iizuka, an 8th dan judoist who also taught at the Kodokan.”

  — The Last Swordsman: The Yoshio Sugino Story, Part 1 - Aikido Journallink

  “In particular, he studied judo under Kunisaburo Iizuka, one of Japan's top collegiate coaches at the time.”

  — Yoshio Sugino - Wikipedialink history info

Sources

Identifiers