In 2002, she moved to her local club Saitama Reinas FC (later Urawa Reds).

In 2005, she moved to Women's Premier Soccer League club California Storm.

On June 15, 1997, Yamago debuted for the Japan national team against China.

[1] She was a member of Japan squads at the 1999, 2003, 2007 and 2011 Women's World Cups, as well as the 2004 Summer Olympics.

This biographical article related to women's association football in Japan is a stub.