Tomoko Namba, the only female owner of an NPB team, is known as 'Namba Mama' by Yokohama DeNA BayStars fans. She has a lifelong love affair with baseball.
Tomoko Namba serves as the owner of the Yokohama DeNA BayStars and is recognized as the team's No. 1 fan. Fans affectionately refer to her as 'Namba Mama'. She holds the distinction of being the only female owner among NPB teams. Her lifelong passion for baseball blends her role as a devoted supporter with her position as owner. The team is based in Yokohama, Kanagawa. The Japan Times describes her as 'The Yokohama DeNA BayStars’ No. 1 fan also happens to be the owner'.
