DETROIT — This is why the Mariners brought Eugenio Suarez home.

Seattle took the biggest swing of MLB’s July trade deadline for October moments like Tuesday’s — when their reacquired third baseman demolished Jack Flaherty’s middle-middle fastball 422 feet deep into the Detroit night.

Suarez admired his fourth-inning solo homer, acknowledged a rowdy Seattle dugout and rounded first base with his pointer fingers to the sky. He formed his signature “Geno Goggles” with both hands circled around his eyes, a nod to the Mariners relievers in the left field bullpen, before hoisting the trident in front of the Tigers faithful who wanted to see nothing less.

It was a silencer in Detroit, aside from the visiting Mariners fans basking in “Good Vibes Only.” Suarez’s home run extended an early lead,

See Full Page