Winners of eight of their last 11, the Nationals have a chance to secure a sweep over the Atlanta Braves on Thursday afternoon.
Jordan Zimmermann kept the Nats rotation train rolling on Wednesday, extending that group's streak of scoreless innings to 34 1/3.
Despite dealing with an extended slump and a heavy heart, Ian Desmond was the hero for the Nats on Wednesday night.
Bryce Harper suffered what appears to be a minor right leg injury, but he will be evaluated further on Thursday.
The Nationals and Braves were locked in a 1-1 pitcher's duel through nine innings, but Ian Desmond broke through with a game-winner in the 11th.