The road to the US Open begins at the Mubadala Citi DC Open in Washington, DC. After several weeks of sliding on clay and adjusting to the low bounces of grass, professional tennis returns to the American hard courts. The change happens quickly. There is no long adjustment period or time to work your way into different playing conditions. Players arrive at Rock Creek Park knowing that the final Grand Slam of the year is only a few weeks away. Washington is the first hard c