Megan Rapinoe, a bona fide female soccer star, recently came out and discusses the rammifications of other athletes coming out.
U.S. soccer star Rapinoe publicly announces she's gay
"It seems like such an odd circumstance, but until there are fearless athletes who willingly tag themselves with this major personality characteristic, a lot of children who grow up to be great gay or lesbian athletes will hesitate to publicly come out …"
http://www.cbssports.com/collegebasketball/blog/eye-on-college-basketball/19465705/us-soccer-star-rapinoe-publicly-announces-shes-gay
As society's attitudes become liberated then we'll see more athletes come out which will forever change our society and its acceptance of the glbt community.