There is only male and female, anything else is a figment of mankind's imagination with exception of hermaphrodites. A man or woman cross dressing, changing their tone of voice or mimicking the mannerisms of the opposite gender does nothing to change that. Individuals should resist being so easily socialized into what is a blatant lie.
In most cases, not all too long after puberty, it is clear why a distinction is made in athletic competition with regard to gender. Furthermore, no young lady or young women should have to settle nor accept second, third or fourth place because a young man chooses to identify himself as something other than a male.
In my opinion, as it pertains to athletics, the entire question is not a matter of fairness, but instead a question that requires common sense and resolve which is lacking in many corners of society these days. The end result is young ladies are being cheated and told to take a back seat to a man again, which something the feminists claim to care about, but it is clearly obvious they don't.