Outrageous.
www.independent.co.uk/life-style/hijab-high-school-race-nike-noor-abukaram-athlete-ohio-a9170076.html
So a girl wearing some cloth on her head, that doesn't affect her performance or anybody else's, is disqualified from a race where she ran her best time of the season, whilst massive testosterone advantage conferred by puberty is not a disqualifier to run, even though other runners who don't have the same testosterone advantage will always be beaten.
Where is sporting fairness?