I had four daughters, who all were athletically gifted, and just loved sports, and rose to a very high
level in more than one sport.
They all participated with the boys on many occasions, which was good for them, as they needed to
be where the competition was equal to theirs, or higher. They didn't "PUSH" to go there, it was just a
natural move, as they were just too much for the girls in their class or age group. And, it wasn't just
my daughters, there were many girls who excelled at sports, who did that, nobody PUSHED.
I have never seen an occasion where any boy's wanted to (as they would say) go down to the level
of a regular girls team, they would hate that, it would humiliate them, and embarass them in front
of their friends.