PITTSBURGH — The Atlanta Braves' hopes of winning the National League East ended Monday night with a 2-1 loss to the Pittsburgh Pirates that clinched the division title for the Washington Nationals. The Braves, who needed to sweep the Pirates and have first-place Washington drop three games to Philadelphia to tie for the division lead, will instead be the top wild card team when the postseason begins Thursday. Starling Marte hit his sixth home run of the season and scored twice to lead the Pirates.