The Humiliating Practice of Sex-Testing Female Athletes

Take the max/mean/median/mode of a random sample of the stats you can find broken down by gender. If the female stats are close to the male stats then segmentation in that sport is probably artificial.

However, my hypothesis (and I may get down-voted for this) is that for many sports the increased weight, height, and arm/leg length will provide an unfair advantage. I think your WNBA/NBA example may be a good example.

But like all hypothesis it would need to be tested.

Then we have the sports where there are no female leagues at all... for those, woman should at least be allowed to try out for the teams.

Men and women are structurally different. Few sports feature an advantage for a woman's smaller size, shorter reach, and muscle fat ratio. I think rock climbing is one of those sports?

Anyway, I think it's awesome that women's sports have developed so much in my lifetime. Sporting scholarships are available for young women now and allowing a whole class of women access to higher education. I'm a terrible couch potato, but had I been athletically inclined, there would not have been the opportunities during my childhood as there are today.