Taylor's second leadoff homer of the year ended a 22-inning scoreless drought for the Nationals. Espinosa's first of the season was a two-run shot that capped a four-run fourth against Mike Leake (0-3).
Strasburg (4-0) gave up two runs on eight hits in seven innings with one walk. He has 29 strikeouts in 22 1-3 innings his last three outings. Jonathan Papelbon earned his eighth save in nine chances for Washington, which is 5-0 in Strasburg's starts.