(Sports Network) - The Atlanta Braves try to push their season-high winning streak to five games this evening when they open a three-game series with the lowly Washington Nationals at Nationals Park.

Although it still sits in fourth place, Atlanta got itself right back in the thick of the NL East race this past week, as it swept a three-game set from the defending world champion Philadelphia Phillies, culminating with a 5-2 win in Thursday's finale.

"Any time you play in the division you want to play well," said Matt Diaz. "We're right there in the middle of it. Somehow, some way, we are. It was fun. The last three nights have been fun.

Diaz finished 3-for-4 and belted a go-ahead RBI double in a three-run eighth, while Garret Anderson added a two-run homer in the same frame to help the Braves pull within two games of the division-leading Phillies and Florida Marlins.

They are also a game back of the New York Mets.

"Without question everyone's got a shot," Diaz added when asked about the division's future prospects. "The Mets are going to get healthy; the Marlins are as good as they were in the beginning of the year when they might be the favorites; and the Phillies are the defending world champs, and when (Raul) Ibanez gets healthy, their offense is completely different. Everyone has a shot, except for Washington."

Mike Gonzalez (3-0) pitched a scoreless eighth to earn the win, and Rafael Soriano earned his seventh save of the season.

Tonight, the Braves turn to Japanese import Kenshin Kawakami, who has not pitched since June 24, when he was forced to leave after three perfect innings when he was hit in the neck by a line drive off the bat of New York Yankees pitcher Joba Chamberlain.

Kawakami, who has allowed three or fewer earned runs in each of his last 10 starts, is 4-6 this season with a 4.25 ERA. He has also faced the Nats twice this season, going 1-1 with a 4.09 ERA in those contests.

Washington, meanwhile, is the lone team in the NL East not competing for the top spot. At 22-54, the Nationals not only have the worst record in baseball, but they sit 17 games back of the front-running Marlins and Phillies.

Manny Acta's crew did not help their cause any this past week, as they were swept in a three-game set by the Marlins and have dropped eight of their last 10 contests.

Hoping to reverse that trend tonight will be rookie Ross Detwiler, who at 0-4 is still searching for his first big league win. Detwiler was charged with the loss last Friday in Baltimore, as the Orioles hit him for five runs and nine hits in five innings, bumping his ERA to 5.24.

Detwiler, who has received one run of support in five of his eight outings, will be making his first ever start against the Braves.

Atlanta has won four of its six matchups with the Nats this season after Washington took 12 of the 18 meetings a year ago.