EUGENE, Ore. – Allyson Felix, Sanya Richards, Dawn Harper and Sheena Tosta highlight extremely competitive women’s sprints and hurdles fields at the 2009 USA Outdoor Track & Field Championships, June 25-28 at historic Hayward Field on the campus of the University of Oregon in Eugene. The final event of the 2009 USATF Outdoor Visa Championship Series, the USA Championships will be televised...