Roddick wrote on his Twitter feed Tuesday: "keep getting asked when my next tourney will be.... i will see all of u in washington in two weeks."
The 2003 U.S. Open champion, who has a home in Austin, Texas, tumbled to the grass in the fourth set against Federer on July 5 at Wimbledon. Roddick went on to play for more than another 1 1/2 hours, finally losing 16-14 in the longest fifth set in Grand Slam final history.
Citing a right hip flexor injury, Roddick pulled out of the U.S. Davis Cup team's quarterfinal at Croatia, then this week's ATP event at Indianapolis.
The Washington hard-court tournament is Aug. 2-9.