PHILADELPHIA -- First baseman Freddie Freeman's ninth-inning error allowed the game's only run to score, as the Philadelphia Phillies beat the Atlanta Braves 1-0 on Friday night.

Freeman's miscue, his second of the game and the fourth by the Braves, made a winner of Philadelphia reliever Ken Giles (1-0). Jim Johnson (1-2) took the loss for the Braves, who have dropped four straight.

Shortstop Freddy Galvis, who went 3-for-4, led off the ninth with a single. Pinch hitter Cesar Hernandez, batting for Giles, sacrificed him to second. Galvis took third on a passed ball by catcher A.J. Pierzynski, and with the infield in, left fielder Ben Revere bounced a ball to Freeman. He was unable to field it cleanly, and Galvis scored.

Phillies starter Aaron Harang, who pitched for Atlanta last season, went eight shutout innings and gave up just two hits, but was saddled with a no-decision. He struck out six and walked one.

Harang retired the first 10 hitters he faced before walking second baseman Albert Callaspo with one out in the fourth. He did not allow a hit until Pierzynski grounded a double inside the first-base bag with one out in the fifth.

Third baseman Chris Johnson followed with a single, putting runners at the corners, but shortstop Andrelton Simmons grounded into an inning-ending double play.

Atlanta starter Alex Wood went 5 2/3 shutout innings, allowing five hits while striking out one and walking two. He gave way to reliever Cody Martin after the Phillies loaded the bases with two down in the sixth, and Martin retired catcher Carlos Ruiz on a foul fly to right.

Philadelphia also put runners at the corners with one out in the eighth, only to see third baseman Cody Asche pop up a bunt to Freeman and Ruiz strike out against Johnson, the fourth Atlanta pitcher.

The Phillies put two runners on in the first inning, but Wood retired first baseman Ryan Howard on a grounder to first.

Pierzynski cut down Revere on a steal attempt in the third when Revere overslid second base. Two innings later, Wood set down Revere with a runner at second to end a threat.

NOTES: Before the game, the Braves optioned RHP Brandon Cunniff and RHP Sugar Ray Marimon to Triple-A Gwinnett and purchased the contracts of RHP John Cornely and RHP Michael Kohn from Gwinnett. ... Phillies RHP Chad Billingsley, on the disabled list since March 27 after right flexor tendon surgery, will make his third rehab start Saturday night for Triple-A Lehigh Valley. His latest start was delayed when Billingsley contracted a virus. ... While Phillies 1B/3B prospect Maikel Franco is off to a promising start at Lehigh Valley, manager Ryne Sandberg said there "hasn't been much talk" about calling him up.