there was a 60 minutes a few months back about a girl who cut her tits off and decided she was a man. (the opposite of this scenario I guess)

she was a high school senior and had accepted swimming scholarship to Harvad (she was a world class woman swimmer). She showed up and told them she was a man, and they had to honor the scholarship offer. She was a horrible swimmer against men. She went from winning every meet to having the goal of not coming in last.

She seemed very conflicted about the whole thing. Said she had no plans of getting a penis, and hadn't ruled out the idea of giving birth to a child in the future, which seems odd for someone who identifies as a man.

edit: found it

"Changing Teams"