Ramba uchiverenga ndima iyi - Musi waFebruary 12, 1974, Watanabe akatanga kutamba nechikwata chenyika yeJapan vachirwa neSingapore. Muna September, akasarudzwa muJapan nokuda kweMitambo yeAsia ya1974
. Akatambawo mumakwikwi e1976 Summer Olympics. Akatamba mitambo 28 uye akarova zvibodzwa 4 zveJapan kusvika 1979.