Wang (4-3) allowed only one run, surrendering four hits while issuing no walks and striking out four for the Nationals.
Danny Espinoza's two-run single in the fourth put the Nats ahead 3-0 and he came around to score on Wang's base hit.
Brandon Beachy (7-3) was touched for four runs on five hits on a six-inning start for the National League wild card-leading Braves, who saw their lead over St. Louis dwindle to two games with four contests remaining.
Notable deaths of 2014 [PHOTOS]
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