Ben Williamson, Leo Rivas and J.P. Crawford combined for seven of the team’s 13 hits while forming the bottom third of the lineup, leading the visiting Seattle Mariners past the Boston Red Sox 8-5 on Wednesday night.

The No. 9-hitting Crawford delivered the biggest blow with a three-run home run in the fourth inning. Seattle extended its lead with two more runs in both the sixth and seventh, then withstood a late comeback attempt from the home team.

Williamson was 3-for-5 with an RBI and run scored, while Rivas scored twice on a 2-for-3 night.

Seattle’s Emerson Hancock (1-1) struck out seven while allowing two runs on five hits across six innings.

Triston Casas belted a three-run homer in the eighth to make things interesting for Boston. Jarren Duran and Alex Bregman each had multiple hits for the Red Sox, who had won six of seven.

The Mariners tagged Boston’s Sean Newcomb (0-3) for a two-out run in the first as Mitch Garver scored Julio Rodriguez on a single up the middle. Newcomb escaped trouble an inning later, working around a no-outs jam that saw the bottom third of Seattle’s order load the bases on back-to-back singles and a walk. The southpaw got Dylan Moore to line into a double play before striking out Rodriguez to end the threat.

After Newcomb struck out the side to strand a runner in the third, the visitors extended their lead on Crawford’s three-run homer to right-center in the fourth. Like in the second, Williamson and Rivas set the table with knocks.

The Red Sox scored single runs in the fourth and fifth. The first one came on Romy Gonzalez’s two-out, opposite-field single that scored Trevor Story, and Rafael Devers drove in the other run with an RBI groundout.

Three of the first four Mariners singled off Josh Winckowski in the seventh, with Williamson and Crawford each driving in runs.

After the Casas homer took the game to the final margin, Andres Munoz pitched a 1-2-3 ninth for his eighth save.

Newcomb struck out eight in five innings.