Bryce Harper had three hits, including his 33rd home run, and Gio Gonzalez tossed six scoreless innings as the surging Washington Nationals defeated the Atlanta Braves 8-2 Saturday night for their fourth straight win. Washington remains five games back of the NL East-leading Mets, who beat the Marlins 7-0. Harper’s two-run blast, which doubled as his 500th career hit, capped a four-run third inning against Atlanta starter Shelby Miller (5-13).