At first, it looked like Anthony Rendon was going to be the hero for Washington. The Nationals were behind, 1-0, when they took the lead in the fifth inning against right-hander Ryan Webb.
With one out, Steve Lombardozzi doubled down the right-field line. Rendon followed and hit a two-run homer over the right field wall to give Washington the one-run lead.
Outfielder Bryce Harper also went 2-for-2 for Washington, with two singles.
Nationals right-hander Jordan Zimmermann cruised through the first two innings of the game, but he found himself in trouble in the third. The Marlins had runners on second and third with one out, when Chris Coghlan grounded out to first baseman Chad Tracy, but Chris Valaika scored on the play to give Miami a 1-0 lead.
Zimmermann lasted three innings and allowed the one run on two hits. He threw 43 pitches, 26 for strikes.
Henderson Alvarez started for the Marlins and was solid, pitching two shutout innings, allowing one hit and striking out two batters.
Relievers Kevin Slowey, Alex Sanabia and Braulio Lara were able to shut down the Nationals for a combined three innings.
Marlins up next: Wade LeBlanc, in the mix for the fifth starter spot, gets the nod against the Braves in Lake Buena Vista, Fla. Atlanta counters with Kris Medlen for the 1:05 p.m. ET contest. Making the trip will be Giancarlo Stanton, Donovan Solano, Adeiny Hechavarria and Joe Mahoney.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.