WASHINGTON (AP) -- Ben Sheets pitched six shutout innings, Brian McCann and Chipper Jones homered and the Atlanta Braves beat the Washington Nationals 4-0 on Saturday in the opening game of a day-night doubleheader Outdueling Nationals starter Edwin Jackson (5-6), Sheets (2-0) extended his scoreless innings streak to 12 in his return after missing last season because of Tommy John surgery on his right elbow. The victory pushed the Braves' winning streak to three and moved them within 1 1/2 games of the NL East-leading Nationals. The Nationals have lost three straight, including the series opener Friday night, blowing a 9-0 lead before falling 11-10 in 11 innings. Washington removed Bryce Harper from the lineup after two innings for precautionary reasons after the 19-year-old fouled a bunt off his left ankle.