Summary: David Epstein of Sports Illustrated joins Kevin to discuss the Olympic mood in England, the performances of Tyson Gay and David Rudisha in New York and the Jamaica's relationship with Usain Bolt. David also shares the story of a transgender Olympic track and field hopeful, discusses the issue of gender within sports, and explains new anti-doping procedures. Also, David gives some insight about his story about the life and death of Sammy Wanjiru and his own time in Kenya.
