Boston’s Jarren Duran hist an RBI single against the Atlanta Braves during the fourth inning Wednesday night in Atlanta. John Bazemore/Associated Press

ATLANTA — Kenley Jansen became the seventh player in major league history to earn 400 saves, pinch-hitter Raimel Tapia hit a go-ahead RBI double in the seventh inning, and the Boston Red Sox beat the Atlanta Braves 5-2 on Wednesday night.

Jansen, who had 41 saves last year in his only season with the Braves, faced four batters for his ninth save in 10 chances.

The 35-year-old right-hander trails Billy Wagner by 22 saves for sixth place on the career list. Jansen retired Sean Murphy on a shallow fly, gave up a double to Eddie Rosario, retired Ozzie Albies on a flyout and struck out Travis d’Arnaud to end it.

Facing reliever Nick Anderson, Tapia drove in Jarren Duran from second to make it 3-2. The run was charged to A.J. Minter (2-4).

Triston Casas hit a two-run homer 442 feet off Braves closer Raisel Iglesias to make it 5-2 in the ninth.

The Braves began the night leading the NL with an .809 OPS and a .465 slugging percentage, but didn’t score a run against Boston starter Brayan Bello (2-1) until Ronald Acuña Jr. hit his seventh homer, a 470-foot shot to left with an exit velocity of 113.9 mph to trim the lead to 2-1 in the sixth. It was Acuña’s longest homer of the season and the fourth-longest of his career.

Austin Riley followed with a single and scored from second on Eddie Rosario’s single to make it 2-all.

Bello allowed six hits and two runs in six innings. Josh Winckowski faced the minimum in the seventh.

Dylan Lee pitched 2 2/3 innings of hitless ball before Collin McHugh replaced him and gave up RBI singles to Kiké Hernández and Duran that put Boston up 2-0 in the fourth.

Lee, a reliever making his first start since Game 4 of the 2021 World Series, took the rotation spot of ace Max Fried, who went on the injured Tuesday with a strained left forearm.

The Red Sox snapped a two-game skid.

Bello was tough on the NL-best Braves early, giving up only singles to Michael Harris II in the third, Riley in the fourth and d’Arnaud in the fifth.

NOTES: RHP Garrett Whitlock, on the injured list since April 25 with elbow ulnar neuritis, will throw a three-inning simulated game Thursday at Fenway Park. Manager Alex Cora said Whitlock will likely make a rehab start before he returns. … Triple-A Worcester placed RHP Bryan Mata on the injured list with a sore shoulder.