A man finds some shelter from the rain Thursday at the U.S. Open, which is being played at Merion Golf Club in Ardmore, Pa. Brendan Smialowski /AFP/Getty Images hide caption

itoggle caption Brendan Smialowski /AFP/Getty Images

Andy Roddick races across the court to return a volley at the 2009 U.S. Open. Roddick was the last U.S. Open men's singles champion from America — which was in 2003 Edwin Martinez1/flickr hide caption

itoggle caption Edwin Martinez1/flickr