MIAMI (AP) -- Marcell Ozuna singled home the winning run with two outs in the ninth inning, and the Miami Marlins overcame an early six-run deficit to beat the Washington Nationals 8-7 on Monday night.
Miami slugger Justin Bour tied the game at 6 in the third inning with a grand slam, his 18th homer. Giancarlo Stanton also hit his 18th of the season to make it 7-all in the seventh.
Bryce Harper hit his 18th homer for Washington, and Anthony Rendon also went deep.
Enny Romero (2-3) retired his first two batters in the ninth but walked Dee Gordon on four pitches. Gordon stole second and went to third on a sharp infield single by Stanton before Christian Yelich walked on a 3-2 pitch to load the bases.
Ozuna then hit a 96 mph fastball on an 0-2 count to the warning track in left-center to trigger a celebration by the Marlins, who lost to Atlanta on walk-off hits by Brandon Phillips on Saturday and Sunday.
Washington's Tanner Roark squandered a 6-0 lead by giving up six runs in the third and failed to make it through the inning. The right-hander has an ERA of 7.94 in his past three starts.
A.J. Ramos (2-3), the Marlins' sixth pitcher, worked around a leadoff walk in a scoreless ninth.
Four consecutive Marlins reached with two outs in the third on an infield single, two walks and Bour's third career slam.
Nationals center fielder Michael A. Taylor had a two-run single, threw out two runners on the bases and robbed the Marlins of a run with a running, backhand catch on the warning track.
Miami left-hander Justin Nicolino lasted only three innings in his return from a bruised left index finger. Pitching for the first time since May 30, he allowed six runs, three earned.