WASHINGTON — Aaron Harang outdueled Stephen Strasburg, Justin Upton drove in three runs and the Atlanta Braves avoided a series sweep in Washington with a 6-2 win over the Nationals on Wednesday. The Braves snapped a three-game losing streak as Harang (11-10) held the NL East leaders to one unearned run over seven innings. Upton's RBI single in the sixth broke a 1-all tie, and he added a two-run double off reliever Ryan Mattheus during a three-run seventh.