Wheeler (11-5) allowed just two hits and struck out nine in his longest outing of the season. He only allowed one baserunner past first, when Cal Raleigh hit a double off the wall in the first inning.

Wheeler got the best of Seattle’s Logan Gilbert in a battle of All-Star starting pitchers. Gilbert (6-8) started out in a hole as he gave up the home run to Schwarber on the third pitch of the game, a fastball in the middle of the plate.

It was Schwarber’s 41st career leadoff homer, and his 10th of the season.

Gilbert allowed four hits and struck out seven without allowing a walk. He threw 98 pitches over the six innings, 15 of them to Nick Castellanos in the second inning, the longest at-bat in the major leagues this season. Castellanos fouled off six straight pitches before grounding out to third base.

Harper singled in the fourth inning to reach 3,000 total bases in his career. Harper is the 42nd player in history and 12th left-handed hitter to reach the milestone before turning 32 years old, according to the Phillies.

Philadelphia held a tight 1-0 lead going into the eighth inning before breaking things open with a homer barrage. Stott led off the inning with his eighth homer against Mariners reliever Yimi García. With two outs, García walked Trea Turner and Seattle turned to left-hander Tayler Saucedo, who promptly gave up a two-run bomb to Harper and Bohm made it back-to-back home runs. Bohm’s 12th homer extended his on-base streak to 22 games, the longest active streak in the majors.

J.T. Realmuto capped the big eighth inning with a run-scoring single to give the Phillies a six-run lead.