In August 1927, when Tamai was a Waseda University student, he was selected the Japan national team for Far Eastern Championship Games in Shanghai. At this competition, on August 27, he debuted and scored a goal against Republic of China. On August 29, he also played against Philippines and Japan won this match. This is Japan national team first victory in "International A Match". He played 2 games and scored 1 goal for Japan in 1927.