Court Name or Code Name?

Call her "Shin"? No, I never wanna do that. She should be called "Takahashi."

Recently, I don't like to watch volleyball games on TV. Why? Because Japan's national team is so gross that I don't feel like supporting them, especially women's. I'm not saying that they are too weak or something like that. However, they are behaving like Morning Musume, Japan's top idol group. Each member of them has her "Court Name," which is really weird.