Perez (1-3) had only two hits in 13 previous at-bats this year. He gave up four runs on 11 hits in 6 1/3 innings on the mound.
Jesus Flores doubled, had two RBI and scored two runs for the Nationals; Nick Johnson scored three runs and drove in one in; Lastings Milledge doubled, scored and had two RBI; and Rob Mackowiak added two runs and an RBI for Washington.
Nelson Figueroa (2-3) lasted five innings. He allowed six runs on five hits and five walks.
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