帝拳プロモーション
Following above mentioned Masao Ōba (1970), Tsuyoshi Hamada won the world title in the junior welterweight division in 1986. While there were several multiple-time world title challengers such as Kazuo Takayama (1960, 1961), Teruo Kosaka (1962, 1964, 1965), Shūichi Hozumi (1983, 1986), Fujio Ozaki (1988, 1989), Shirō Yahiro (1993, 1996, 1998) and Yūichi Kasai (1994, 1996, 1997), no one got a world championship belt in Teiken Boxing Gym in Tokyo for about twenty-one years, although the boxers promoted by Honda such as Genaro Hernández (1991, 1997), David Griman (1992), José Luis Bueno (1993), Eloy Rojas (1993), César Bazán (1998), Alexander Muñoz (2002, 2007), Edwin Valero (2006, 2009), and Román González (2008, 2011) were crowned the world champions. On the other hand, in Osaka Teiken Boxing Gym, Jirō Watanabe (1982, 1984), Takuya Muguruma (1987) and Jōichirō Tatsuyoshi (1991, 1993, 1997) captured it from 1980s to 1990s. In those days, Teiken Boxing Gym in Tokyo's trainer Isamu Kuwata and Osaka Teiken Boxing Gym's trainer Jun'ichi Okubo were presented with the Eddie Townsend Award in 1992 and 1993, respectively.