Summary: Jason and Kevin welcome Sports Illustrated's Tim Layden to the podcast and get his thoughts on Daegu, Usain Bolt's impact on track and field, Allyson Felix's Olympic outlook and David Rudisha's dominance . Tim also describes the challenges of covering a sport with a history of doping and explains why track has had trouble attracting a larger audience. Later in the podcast, Jason and Kevin debate Yohan Blake's chances against Usain Bolt and preview Galen Rupp's attempt at an American record in Brussels. Play/Download
