We know, equality and fairness is not something you liberals concern yourselves with when it comes to womens safety. 
How many transgender folks are there who participate in college or professional sports?
According to the NCAA, there are less than ten at the college level. Nationally and internationally is estimated at less than fifty. In total there are more than 500,000 NCAA athletes. If this is correct it means it is 0.01%.
As I said previously, there are other more important issues to be concerned about.