LetsRun's friend David Epstein has a big article out today about Tyson Gay positive test this summer. It's published both in Sports Illustrated and on Pro Publica.
Check out the homepage or this link:
The skinny is he tested positive after seeing a doctor that is very popular with a slew of NFL stars and may have very well tested positive for a drug that is legal in the NFL (and MLB) but not track.
PS. We're trying to think of a clever twitter hashtag for people to mock the NFL's drug testing.