In an opinion piece by world-class athlete Alysia Montano, we learn that female athletes who are pregnant often lose their endorsements and health insurance, while of course male athletes can have children and not skip a step in earnings or health insurance.
In yet another example of how women are penalized for having children, Nike is mentioned among others who claim to support female athletes, and have been known for touting mothers, they do not support women who are in the process of having children. The United States Olympic Committee and USA Track and Field can spot their health insurance support if women become pregnant.
https://www.nytimes.com/2019/05/12/opinion/nike-maternity-leave.html