Human Growth Hormone
Speed Bumps: Why It's So Hard to Catch Blood Dopers in Track and Field
A cache of leaked blood tests showed hundreds of track athletes have recorded results “suggestive of doping.” With the 2015 world track championships about to start, a look at why anti-doping tests are so ineffective.
Did Tyson Gay's Coach Give the Sprinter Banned Substances?
Jon Drummond, saying he is facing a lifetime ban, is suing Gay and the head of U.S. Anti-Doping Agency for defamation.