Boston’s Bobby Dalbec hit a home run in each game of Tuesday’s doubleheader split with Philadelphia. Dalbec has now homered in five of his first nine career games. Matt Slocum/Associated Press

PHILADELPHIA — Bobby Dalbec homered for his fourth straight game, his two-run shot in the sixth inning enough to help the Boston Red Sox beat the Philadelphia Phillies 5-2 on Tuesday night and split a doubleheader.

Alec Bohm hit a two-out, two-run single in the seventh inning to rally the Phillies to 6-5 win in the opener.

Philadelphia’s Alec Bohm celebrates with teammates after hitting the game-winning two-run single off Boston Red Sox pitcher Matt Barnes during the seventh inning of the first baseball game in a doubleheader on Tuesday in Philadelphia. Matt Slocum/Associated Press

Dalbec homered in both games of the doubleheader, and the rookie first baseman has homered in five of his first nine career games. He’s the first Red Sox rookie to homer in four straight games.

Phillies reliever David Phelps, acquired at the trade deadline in an attempt to fortify the beleaguered bullpen, walked Jackie Bradley Jr. on four pitches to open the sixth. Dalbec homered two pitches later for the decisive shot that sent the Phillies to a crushing loss as they head into a lengthy road trip in Miami. Phelps (2-4) has allowed a homer in his last three appearances for the Phillies.

The Red Sox tacked on a run in the seventh to make it 5-2, and Marcus Walden got the final two outs in the ninth for his first save.

Chris Mazza (1-1) allowed two runs in five innings for the win.

Bohm continued his knack for clutch hits, coming through in the opener with Philadelphia down to its last strike. The rookie drove in four runs with three hits, including his winner off Matt Barnes (1-3) as the Phillies compete for their first playoff berth since 2011.

“We knew if Bohmer got up, he was getting the job done,” Phillie starter Zach Eflin said. “He’s just playing awesome baseball. It’s really cool to see someone step up like that on multiple occasions and come through for the boys.”

Bohm hit a sacrifice fly in the 10th inning last week to lead the Phillies to a win over Washington. He also had a tying hit in the eighth inning of Philadelphia’s win a day earlier against the Mets.

The Phillies started a run of five doubleheaders – all of them seven-inning games – between now and Sept. 22. That highlights a stretch of 19 games in 15 days, including a whopping seven straight games in Miami.

Hector Neris (2-1) pitched 1 1/3 scoreless innings to get the win in an only-in-2020 one day, two-game series.

Rafael Devers homered twice and Dalbec continued his homer hot streak for the Red Sox. Alex Verdugo also hit one of Boston’s four solo homers.

Dalbec went deep off in the fifth off Tommy Hunter for Boston’s fourth solo homer of the game that tied the score 4-all. Devers admired a deep shot off Hunter that ended up off the wall and an RBI double for a 5-4 lead.

Didi Gregorius’ sixth homer of the season was a solo shot off Martin Pérez in the second for a 1-0 lead. Devers evened the score with his eighth homer of the year on a liner to right.

Verdugo and Devers went back-to-back in the fifth to make it 4-3.

“We came back on ’em and got the lead and got the people out there that we wanted to finish the game,” Red Sox Manager Ron Roenicke said. “It didn’t didn’t work.”