Students (1)

• 
  Bert Becerra

  linkKōdōkan Jūdō 3

  Confirmed

  The club website describes John Osako as Becerra's last coach, a great judo champion, referee and friend

  expand_morefact_checkassessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  1 source

  fact_check

  The club website describes John Osako as Becerra's last coach, a great judo champion, referee and friend

  assessed by FSMverified

  Frederico Muñoz

  Researcher, Martialis

  "Sensei Bert Becerra and his last coach, John Osako, a great judo champion, referee and friend"

  — Becerra Judo. (2011). Becerra Judo & Jujitsu linkhistoryinfo

Sources