Carlos Narvaez hit a two-run homer in the 11th inning to lift the visiting Boston Red Sox to a 9-8 victory over the Philadelphia Phillies on Wednesday.

After both teams scored a run in the 10th, Narvaez’s shot off Seth Johnson (1-1) helped the Red Sox salvage the series finale. Jorge Alcala allowed a two-out RBI single to Johan Rojas in the bottom half, but Brennan Bernardino came on and retired Max Kepler on a called third strike for his first career save.

Philadelphia lost despite holding an early 5-0 lead and finishing with five home runs, including a clutch shot by J.T. Realmuto in the eighth to tie things up after Boston had taken the lead in the fifth on Romy Gonzalez’s grand slam. That was the only other homer for Boston, which had been 1-4 since the All-Star break.

The Phillies jumped in front 3-0 in the first inning, thanks to back-to-back home runs by Kyle Schwarber and Bryce Harper against Boston starter Lucas Giolito.

After Trea Turner singled to open the frame, Schwarber drilled a 2-0 changeup over the wall in right-center field for his team-leading 34th homer. On the next pitch, Harper slammed a fastball over the right-field wall for his 14th homer of the season.

Nick Castellanos homered in the third and Bryson Stott added one of his own in the fourth, making it 5-0 before the Red Sox had even recorded a hit.

However, Jose Luzardo could not hold the lead in the fifth. He allowed a leadoff double to Masataka Yoshida and then issued a walk — his first of four in the inning. With two outs, Luzardo walked three straight batters, including two that forced in a run, and then he surrendered the grand slam to Gonzalez, putting Boston in front 6-5.

In the midst of the rally, Realmuto was unable to locate a foul pop that would have ended the inning. However, he made up for it in the eighth, belting a two-out home run to center against Aroldis Chapman to tie it at 6-6.

Trevor Story’s RBI double off Max Lazar put the visitors ahead 7-6 in the 10th before Schwarber’s RBI single against Greg Weissert (3-3) drew the hosts even in the bottom half.