The Nationals seized control of the game in the ninth. Brad Ziegler (0-1) walked Denard Span, who moved to third on Anthony Rendon's double off the right-field wall with no outs. Then, Jayson Werth had an intentional walk to load the bases.
Desmond's sharp grounder to left brought Span and Rendon around to give the Nationals the lead for good. Werth and Desmond both moved up a base on Danny Espinosa's groundout and came home on Tyler Moore's single to center.
Werth also homered for the Nationals.