Women's 400 2011 Prefontaine Classic (Montsho over Allyson Felix)
Jun 4, 2011
2011 Diamond League Eugene: Amantle Montsho upsets Allyson Felix in 400m. June 4, 2011: Amantle Montsho of Botswana wins the women's 400m over Americans Allyson Felix and Sanya Richards-Ross at the Prefontaine Classic. From Universal Sports