Masahiko Kimura
Aside from training with his brothers, Gracie learned further judo under Sumiyuki Kotani and Argentinian judo pioneer Chugo Sato. He might have also got training under a practitioner named Hiraichi Tada. However, the extent of his official training in this art remains unknown. According to Masahiko Kimura, Gracie held the rank of 6th dan in judo in 1951, while according to Robert Hill, Kodokan records show Gracie at the rank of 3rd dan at the time, though Hill also noted that it was not unusual for Kodokan records to show a lower rank than that actually held by non-Japanese judo practitioners.