All-Japan Rugby Football Championship
In 1960–1961 season, the first NHK Cup was held, which decides the No. 1 rugby club in Japan. Before that, university teams had been stronger than company teams in Japan. But after the World War II, many company teams were restarted or founded newly, and the company rugby were growing up. So Japan Rugby Football Union organized the NHK cup for three times from this season, and changed it to All-Japan Rugby Football Championship from 1963–1964 season.