
Gio Gonzalez (6-4) outdueled Jake Peavey (0-3). Gonzalez got the win for the Nationals, going seven innings, allowing a run on five hits, striking out six without a walk.
Peavey gave up two runs on three hits in six and a third innings, striking out four and walking four.
Drew Storen earned his 24th save with a perfect ninth.
The Nats (44-36) have a four-game lead on the New York Mets in the National League East.