so your answer is no, it would not be fair.
--------------------------------------------------------------
but you want unfairness in girls' sports.////////////////////////////
------------------------------------------------------------
https://womenssportspolicy.org/pre-pube ... rformance/
Here’s what the recent research shows: Even pre-puberty, males have substantial testosterone-based advantages, which begin before birth. In utero, male fetuses receive an infusion of testosterone that is later associated with
young boys’ somewhat greater strength and
somewhat greater propensity for aggression – the androgenic effects of testosterone. For example, fitness data from over 85,000 children in Australia showed that, compared to nine-year-old females, nine-year-old males were 9.8 percent faster in sprints (running) and 16.6 percent faster in the mile run