Jordan Zimmermann pitched six solid innings, and Ian Desmond and Rick Ankiel homered to lead the Washington Nationals to a 5-2 victory over the Philadelphia Phillies on Tuesday night.

Bryce Harper tripled, singled and drove in two runs for the Nationals, who won their third straight game and beat the Phillies for the sixth straight time in Philadelphia -- something that never had been done in the franchise's 43-year history. Washington has defeated Philadelphia in four of the five meetings this season and 13 of the last 16 overall.

Erik Kratz homered for Philadelphia, which lost its season-worst fourth straight.

Zimmermann (3-4) earned his first win in five career starts against Philadelphia, surrendering one run and seven hits in six innings.

Roy Halladay (4-4) continued his indifferent season with his second-worst start of the season, going six innings and allowing five runs and nine hits with six strikeouts and one walk.

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