BOSTON (Interstat) — In a back-and-forth contest defined by a decisive fourth inning, the Boston Red Sox edged the Detroit Tigers 4-3 on Sunday evening at Fenway Park to claim the series victory.

The game, played in front of 35,503 fans, was a tight pitchers’ duel for the first three frames before erupting in the fourth. The Red Sox improved to 89-73 with the win, while the Tigers fell to 87-75.

Boston struck first in the bottom of the first inning when Masataka Yoshida launched a solo home run to right field off Detroit starter Chris Paddack. That 1-0 lead held until the top of the fourth, when the Tigers’ offense came alive against Boston starter José De León.

Justyn-Henry Malloy and Kerry Carpenter led off the inning with consecutive singles. After a fielder’s choice put runners on the corners, Javier Báez connected on a three-run homer to left-center field, giving Detroit a 3-1 advantage.

The lead was short-lived, as the Red Sox immediately answered in the bottom half of the inning. After a walk to Connor Wong, David Hamilton tied the game with a two-run shot to right-center. Nick Sogard followed with a double and scored the go-ahead run on a Jarren Duran double, putting Boston back in front 4-3.

That score would hold for the remainder of the game, as the Red Sox bullpen stifled multiple Detroit threats. The Tigers grounded into two double plays, including a critical one in the seventh inning that erased a potential rally with runners on first and second and nobody out.

De León earned the win for Boston, improving to 1-0. He pitched 6 2/3 innings, allowing three runs on eight hits while striking out eight. Greg Weissert recorded the final three outs, striking out two in a scoreless ninth for his fourth save of the season.

Paddack took the loss for Detroit, dropping to 5-12. He was charged with all four Boston runs on seven hits over 4 1/3 innings. Tanner Rainey provided two scoreless innings of relief for the Tigers.

The game time was 2 hours, 31 minutes. The series concluded with the teams splitting the first two games before Boston’s victory in the rubber match.