Mary won her doping case against the court of arbitration, therefore as a technical matter Decker did not dope. Mary's primary contention was that the 1996 doping test was flawed and could not distinguish between dope and the hormones in her birth control pills. To this day, there is no conclusive evidence to say she did or didn't. The story I was always told was take she tinkered with a low dosage of some sort to recover from injury, but had not doped for some time leading up to and during the 1996 games. If she doped it was in 1996 which was the twilight of her career. I am almost certain Mary did not dope her way to success; she was super talented. I know someone who competed against Mary and trained with her a couple times in the late 80s. They recalled a conversation the two of them had about the fact that many of their competitors where and doing so with the assistance of their federations. Mary and the athlete I know were afraid of doping back them becasue they thought they would end up looking like Jarmila from Czechoslovakia. They also where afraid doping could make them sterile.