Gio Gonzalez allowed two runs in seven innings, Bryce Harper had three hits, and the Washington Nationals kept up their push for home-field advantage in the NL playoffs by beating the Miami Marlins 6-2 on Thursday night. Kevin Frandsen and Anthony Rendon each had two hits for Washington (88-64), which opened the night 1-1/2 games ahead of the Los Angeles Dodgers in the race for the NL's best record. A Miami native, Gonzalez (9-10) allowed six hits, striking out five and walking none. Jeff Baker drove in one run and scored another for the Marlins (74-78), who opened their final homestand of the season.