Transgender Boys Playing Boys Sports?

[BFritz21]

I've heard about transgender girls playing against other biological girls in high school sports, but I haven't heard of any transgender boys playing against biological boys. Does anyone have any examples? Why are we only hearing about transgender females in sports?

For a transgender boy, it would be a cool thought playing sports against a bunch of girls, but, as a competitor, it wouldn't feel right and wouldn't be as fun.

Do the transgender boys change in the boys' locker rooms? Shouldn't they be banned from the girls' room if they are, indeed, boys?