Where he became, at the age of 25, a master at judo receiving the rank of yondan (4th dan/degree black-belt) from the Kodokan, becoming the first European to rise to that rank
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Where he became, at the age of 25, a master at judo receiving the rank of yondan (4th dan/degree black-belt) from the Kodokan, becoming the first European to rise to that rank
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikipedia. The archived copy is preserved so this citation survives link rot.