Rank in Judo English language edition (1955) of "Illustrated Kodokan Judo", edited by the Kōdōkan, says: This statement was later clarified, however. Essentially, the dan-rank system was capped at 10 after the death of Kanō. In that respect, in the November 1963 issue of "Jūdō", the Kōdōkan's official magazine, the Kōdōkan responding to the question "Do the 11th and 12th Dan really exist?" clarifies that the hierarchy now stops at 10 and that the Kōdōkan does not envisage any nominations to these grades. There have only been fifteen 10th dan promotions awarded by the Kōdōkan in the history of Judo. Although "dan" ranks
Judo in the United States the U.S. development of judo is Yamashita Yoshitsugu, who came to the U.S. in 1902 in order to teach judo to the Japanese community. Yoshiaki ended up teaching Senator James Wolcott Wadsworth Jr.'s wife, who happened to attend the same country club as Theodore Roosevelt. Mrs. Wadsworth told Roosevelt about judo, and he became interested in the sport. Yoshiaki was subsequently invited to Washington to give a demonstration at the White House. There was a contest with a wrestler by the name of John Graft, who was the coach at the U.S. Naval Academy and who was teaching President Roosevelt