German struck out nine, one shy of his career high set Thursday against Tampa Bay, when he allowed a homer to Matt Duffy on the first pitch of the game. He did not issue a walk and threw 67 of 96 pitches for strikes while getting 17 swings and misses.
The Yankees won for the 15th time in 19 games.
Giancarlo Stanton hit a solo homer in the first off Marco Gonzales (7-4) while rookie Miguel Andujar and Aaron Hicks hit two-run homers in a span of three batters in the fifth. Rookie Gleyber Torres hit a solo homer halfway up the left field bleachers in the eighth.
Aaron Judge drove in the other run with a seventh-inning single for New York.
The Mariners lost for only the fifth time in their last 18 games.
The Yankees tied it when Stanton lifted Gonzales' first-pitch curveball onto the netting above Monument Park beyond the center field fence with two outs in the first. It was his 17th homer and fifth hit in six at-bats.
The game stayed tied until the fifth when Andujar drove Gonzales' 2-2 curveball 427 feet into the left field seats for his ninth homer. Hicks became the sixth Yankee to reach 10 homers when he lifted Gonzales' first-pitch changeup over the left-center field fence after Clint Frazier singled.
--Field Level Media
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