Back in the Seventies, Glenn Burke played baseball for the Los Angeles Dodgers and Oakland Athletics. Burke was very open about his homosexuality, but the sports media was way too uncomfortable to write anything about him. Later, Burke wrote an autobiography ("Out at Home") which told his tale.
Burke's is a sad story -- homophobia cut short his career and later his life.
As a wise man once said, you can look it up. http://en.wikipedia.org/wiki/