Medlen (2-6) posted his first victory since April 9 -- a span of 10 starts -- limiting the Pirates to seven hits. The right-hander didn't issue a walk and struck out six in tossing 68 of his 102 pitches for strikes.
Chris Johnson went 2-for-3 with an RBI as the National League East-leading Braves took a win in the opener of a three-game set.
A.J. Burnett (3-6) was roughed up for six runs on eight hits over five full innings for the Pirates, who fell for the third time in four games.
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