 Nyorai kuenderera mberi kweiyi ndima - Muna Chikumi 2005, Yamamoto akasarudzwa Japan U-20 timu yenyika ye2005 World Youth Championship. MunaAugust 2008, akasarudzwa Japan U-23 timu yenyika ye2008 Summer Olympics. Asi haana kutamba mumutambo uyu, sezvo aive muchengeti wemagariro echikwata kumashure kwaShusaku Nishikawa makwikwi ese ari maviri. 