ATLANTA -- With the help of an error by Marlins left fielder Bryan Petersen, the Braves scored four runs in the fourth inning Thursday night and erased an early two-run deficit. They went on to win 6-2, completing a three-game sweep of the Marlins at Turner Field.

The win was the Braves' fifth straight and their 10th in 12 games since getting swept in Milwaukee two weeks ago.

The Braves' latest victory kept the pressure on the Nationals, who are attempting to close out the National League East and force Atlanta to play in the NL Wild Card game. Washington beat Philadelphia Thursday keeping the Braves at four games back.

The Marlins scored one run in the third and fourth off right-hander Tommy Hanson, ending a 13-inning scoreless streak by Braves pitchers. But Hanson limited the damage in both innings and escaped a bases-loaded jam in the second to keep Atlanta within striking distance.

In the fourth inning, the Braves took advantage of the opening left by the Marlins. After rookie right-hander Jacob Turner got Chipper Jones to pop out to start the inning, four straight Braves rapped hits off the rookie. Dan Uggla and Andrelton Simmons each delivered RBI doubles to tie the game at two.

Turner struck out Hanson, and after walking Jose Constanza, appeared to get out of the inning when Martin Prado hit a line drive to left field. Petersen ran over and had the ball in his glove, only to drop it. The error allowed the two go-ahead runs to score.

The Braves would add two more runs in the seventh when Uggla hit a two-out, two-run single to left. Uggla went 2-for-4 with a double and three RBIs.

Once he was given the lead, Hanson was able to finish strong. Before his night ended after allowing a one-out single to Donovan Solano in the sixth inning, Hanson had retired six batters in a row. He allowed two runs (one earned) in 5 1/3 innings and struck out four batters.

Three Braves relievers combined for 3 2/3 scoreless innings to close out the victory. In their three-game series against the Marlins, Atlanta's bullpen threw eight scoreless frames.

Notes:

Tommy Hanson has allowed two or fewer earned runs in four of his past five starts.

Andrelton Simmons was 2-for-4, including an RBI double in the fourth inning -- his first extra-base hit since coming off the disabled list on Sept. 10.

The Braves announced that Michael Bourn's MRI Thursday revealed no ligament tear and a slight sprain. He remains day-to-day but will likely sit for a couple more games.

Martin Prado extended his hitting streak to five games and is batting 7-for-15 during the streak.

Dan Uggla, who was 2-for-4 with three RBIs, now has 12 RBIs in his past 11 games.

The Braves bullpen logged 3 2/3 scoreless innings, and leads the Major Leagues in ERA for the month of September at 1.43.

Jonny Venters pitched two scoreless innings for the first time since July 22 and only the second time this season

----- Portions of this story from MLB.co.