ATLANTA — The Atlanta Braves gave themselves a glimmer of hope in the NL East. Hey, after what happened to these guys a year ago, they’re not giving up on chasing down the first-place Washington Nationals. Mike Minor threw six strong innings, Dan Uggla broke it open with a two-run single and the Braves denied Gio Gonzalez his 20th win, completing a sweep of Washington with a 5-1 victory Sunday night.