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Washington, DC (Sports Network) - Ian Desmond hit a two-run home run and drove in three as the Washington Nationals took a 7-3 win over the Chicago Cubs to open a three-game set.

Danny Espinosa and Kurt Suzuki each drove in two runs for the Nationals, who have won five straight. Ross Detwiler (2-3) gave up two runs one eight hits with two strikeouts over 6 2/3 frames to snap a three-start losing streak.

Starlin Castro hit a pair of doubles, scored once and drove in a run for the Cubs, who have lost six of their last eight. Jeff Samardzija (1-5) dropped his fifth straight decision after giving up seven runs -- five earned -- on eight hits in just five innings.