2013 Citi Open – Men's singles
Event
Alexandr Dolgopolov was the defending champion, but lost to Indian qualifier Somdev Devvarman in the second round.
Juan Martín del Potro won his third Citi Open title and second title of the year, defeating John Isner in the final, 3–6, 6–1, 6–2. Wikipedia
Start date: July 29, 2013
Location: Rock Creek Tennis Center