Eventually solving John Isner's big serve, top-seeded Juan Martin del Potro won his third Citi Open title and 14th consecutive match at the hard-court tournament by winning Sunday's final 3-6, 6-1, 6-2.
Getting his game in shape ahead of the U.S. Open, the Grand Slam tournament he won in 2009 and which starts in three weeks, del Potro broke Isner four times in all, including three in a row while winning seven consecutive games to take control.
Isner had not even faced a break point over any of his previous three matches. Del Potro also limited Isner to six aces, after the eighth-seeded and 20th-ranked American pounded 29 in the semifinals.
Del Potro also won the Washington tournament in 2008 and 2009, then skipped it in 2010, 2011 and 2012.