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Washington, DC (Sports Network) - Bryce Harper sent a fourth-inning Gavin Floyd offering into the second deck and Danny Espinosa drove in two runs, as the Washington Nationals remained perfect at home this season with a 5-2 win over the Chicago White Sox.

Jordan Zimmermann (2-0) was dialed in all night for Washington, allowing just two runs on seven hits while striking out four in seven innings of work. Zimmermann was also productive at the plate, laying down two sacrifice bunts.

Espinosa went 2-for-4 and drove in his first two runs of the season, while Ian Desmond had three hits -- two doubles and a triple -- and two runs scored.

Floyd went just 5 1/3 innings while yielding five earned runs and nine hits. He also had seven strikeouts.

Alex Rios and Conor Gillaspie each had two hits to pace Chicago.