Some of this issue can be avoided by removing some gender clarifications: in your example, there is no need to mention that the netball team was a girls' team. If you tell the story that "at age 12, he was the captain of the netball team", you did not tell a lie at all, and you let those listening to conclude for themselves whether they assume it to be a guys' team, know it was the girls' team, or not care at all — ThisIsMe 1 min ago