Yamaguchi started to play
tag rugby when she was ten years old. Her coach
Keiko Asami taught her to play
rugby when she was twelve. Yamaguchi was also a member of a
track and field club for three years at
junior high school, in which she did sprint and jump. where she attended rugby practices three times a week and in the weekend she attended training camps or rugby practices as a member of the Japanese national team. Throughout her career, Yamaguchi was a regular for the Japanese rugby national team. In April 2017, Marie Yamaguchi announced her retirement from rugby. She got married in March 2017 and has since relocated to Brazil with her family. ==References==