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ATLANTA -- Bobby Cox's review of the game looked good for his Atlanta Braves.

"We threw eight shutout innings. We outhit them. We doubled them in hits. Our bullpen was great," Cox said.

Trouble is, the Washington Nationals won and not the Braves.

Light-hitting Justin Maxwell's grand slam off rookie Mike Minor in the second inning powered the last-place Nationals over Atlanta 4-2 on Wednesday and sent the Braves to only their second home series loss this season.

Atlanta outhit the Nationals 10-5 but stranded seven runners.

"They had one major opportunity they took advantage of," said Atlanta's Matt Diaz, who had three hits, including two doubles. "We had quite a few opportunities, and we didn't take advantage of many of them at all. It's really frustrating when we're not able to do that."

John Lannan (8-7) gave up two runs, eight hits and three walks in six innings for the Nationals, who have won eight of 15 meetings with the Braves this season. Joel Peralta, Sean Burnett and Drew Storen combined for two-hit relief, with Storen pitching a 1-2-3 ninth for his fourth save in five chances.

Atlanta, which began the day two games back of the NL East-leading Philadelphia Phillies, lost two of three to Washington, only the second series in 24 at Turner Field this year the Braves lost (19-2-3). Atlanta split four games against the St. Louis Cardinals during a 3-4 homestand but still has the major leagues' best home record at 52-23.

Maxwell was hitting only .132 (10-for-76) with six RBIs before his drive off Minor (3-1) stayed inside the left-field foul pole and went about 10 rows deep. It was just the third homer of the season for Maxwell and ninth of his big league career -- but he has three slams in four career at-bats with the bases loaded.

"You're just trying to make the most of every situation," Maxwell said. "I always have a special incentive when I have a chance to hit. I just try to do something with it."

Maxwell said he wasn't thinking of his success in bases-loaded situations.

"I was just trying to put the ball in play," he said.

Washington manager Jim Riggleman termed the 27-year-old "a work in progress."

"I think he knows he can hit," Riggleman said. "He has a few grand slams. He's not afraid of the situation."

Making his seventh major league start following his Aug. 7 promotion from Triple-A Gwinnett, Minor said Maxwell hit a fastball. Minor noticed a drop in velocity on his fastball to 90 mph in recent starts, down about 2 to 3 mph from where it should be early in games.

"It was my fault," Minor said. "I threw him two fastballs right there. The second one, he got. It was more middle in. That's what he's looking for in that situation."

Mike Morse had a one-out double to center, Wilson Ramos singled and Alberto Gonzalez fell behind 0-1 before taking four straight balls.

Minor's ERA climbed from 5.63 to 5.84 as he gave up four or more runs for the third straight start. He allowed four hits in five innings and struck out six.

Troy Glaus walked in the fourth, moved to third on a double by Diaz and scored on Melky Cabrera's groundout. Martin Prado's fifth-inning single drove in Omar Infante, who led off with a double.

Atlanta wasted scoring chances in the sixth and seventh innings.

Lannan struck out David Ross with runners on first and second to end the sixth.

In the seventh, pinch-hitter Eric Hinske was credited with a leadoff double when center fielder Nyjer Morgan lost the ball in the sun. Hinske was stranded at third when Burnett struck out Prado.

"It was one of those days that didn't go our way," Cox said.

Game notes

Atlanta lost two of three to the Phillies from April 20-22. ... Riggleman said he isn't sure when Morgan will hear the determination of his appeal of seven- and eight-game suspensions. ... Prado had three hits and leads the NL with 57 multihit games.