Five-time minimumweight world champion Katsunari Takayama filed an application Monday with a sports arbitration body to overturn a decision by Japanese amateur boxing authorities preventing him from competing at the 2020 Tokyo Olympics.The first Japanese fighter to have been crowned champion in four major international organizations, the 35-year-old Takayama retired from the professional ranks in April last year with the aim of ending his career as an Olympic gold medalist.His license application to compete as an amateur boxer was denied by the Aichi Prefecture Boxing Federation last June, …READ FULL ARTICLE