Even without their best hurdler, the United States looks ready to sweep tonight's final of the women's 100m hurdles. World Record holder Kendra Harrison did not make the U.S. team out of July's Trials, but Brianna Rollins, Kristi Castlin and Nia Ali look set to prove they don't need Harrison to bring a U.S. sweep of the 100m hurdles. U.S. Women have never had a medal sweep in athletics. The United States swept the 400m and the 400m hurdles in Beijing in 2008. The Women's 100m Hurdles final takes place tonight at 9:55pm EST.