Josh Naylor delivered a bases-clearing two-out double in the eighth, flipping a 3-1 Seattle deficit into a 4-3 lead as the Mariners clinched a playoff berth. Seattle rode a late rally, backed by solid bullpen work and a dominant home run from Dominic Canzone earlier, to extend its hot stretch to 15 wins in 16 games and tighten the hunt for the AL West crown. Colorado’s McCade Brown fanned a season-best 10, but the late Seattle surge sealed the win and kept the Mariners rolling toward postseason play.

The win sets up a pivotal next step as Seattle ponders the division title with Castillo on the mound in the upcoming clash, while Colorado looks to build on right-hander Tanner Gordon’s steady outing. The tone of the night underscored Seattle’s resilience and opportunity as the season winds down.

Seattle's four-game September slide continued with a 4-1 loss to Atlanta as Gilbert delivered a quality start but the bullpen collapsed in the eighth behind Gabe Speier’s three-run meltdown. Seattle went quiet in the ninth, leaving the division race unsettled.

The Mariners sit 3.5 games back of Houston, with Texas lurking four behind. A favorable remaining schedule and a three-game set with the Astros in Houston on Sept. 19-21 could decide the West if Seattle capitalizes and shortens the leash on late-inning relief.

Seattle rode a 4-2 homestand into momentum for the road swing, sweeping two series and securing Vedder Cup honors against San Diego.

Bryan Woo battled through 5.2 innings in the Padres win, fanning six with two earned on six hits. The result snapped a 25-start streak of six-plus innings, but Woo still owns a 28-game five-plus-inning run dating to last season, with a 2.95 ERA and 166 strikeouts in 164.2 innings. Dan Wilson leaned on Gabe Speier to close a jam, a move Woo praised as a sign of growing bullpen trust.

Emerson Hancock’s bullpen-transition storyline hangs over Seattle’s growing pitching depth, as the rotation and relievers knit together for a road-heavy stretch. With Vedder Cup momentum and a durable nucleus in Woo, Seattle carries confidence into the upcoming slate.