Sport, especially professional sport, is more "manly" than even the military. Locker rooms are notoriously bigoted places...I don't see it happening with an active player anytime soon.
in building off of deadman, here is renowned Lacanian Slavoj Zizek, in a context that can be applied to this discussion.
One should ask here a naive, but nonetheless crucial question: why does the Army so strongly resist publicly accepting gays into its ranks? There is only one possible consistent answer: not because homosexuality poses a threat to the alleged ‘phallic and patriarchal’ libidinal economy of the Army community, but, on the contrary, because the Army community itself relies on a thwarted/disavowed homosexuality as the key component of the soldiers’ male-bonding.http://libcom.org/library/multiculturism-or-the-cultural-logic-of-multinational-capitalism-zizek
