The Olympics dropped routine gender verification in 1999. In fact, the IOC now allows transsexuals who have completed gender reassignment surgery (with certain qualifiers) to compete. The IAAF dropped gender verification in 1992. Both reserve the right to verify gender in individual cases, but after the Caster Semenya case . . . it's not likely, IMO.
I didn’t realize that....what prompted the discussion was when Brittany Griner(sp?) from Baylor dropped out of the Olympic Team...there were some rumors she was a guy.