Double standards in sports

Michael Phelps, the winningest Olympian of all time, has a genetic advantage which causes him to produce only half the lactic acid levels (which causes muscle fatigue) of the typical athlete.

Caster Semenya, an Olympic runner, is believed to have intersex traits.

Both athletes have biological differences that could impact their performance in sport. However, Michael Phelps was praised while Caster Semenya was defamed & barred from competition.