Athletics at Seattle Mariners: Final Score & Recap

The Athletics overcame a rough first inning to defeat the Seattle Mariners 7-4 at T-Mobile Park on September 3, 2026, handing Seattle a loss in a game the DiamondIQ model had given the home side a 62 percent pre-game win probability. Oakland scored in each of the first two innings but fell behind 3-1 after Seattle's three-run first, and the game remained there until the Athletics began pulling away with two runs in the fifth and one more in the sixth.

The decisive sequence began in the top of the fifth when Lawrence Butler singled off Kade Anderson, a hit that shifted win probability 23.3 points in Oakland's favor and represented the single biggest swing of the evening. An inning later, Donovan Walton connected for a home run off Carlos Vargas, adding another 13.0 points of win probability to Oakland's ledger and extending the lead further. Seattle mounted a threat in the eighth, but Luis Medina extinguished it efficiently, as Cole Young struck out and Josh Naylor flied out in consecutive at-bats, swings worth negative 12.3 and negative 11.0 points for the Mariners respectively. Max Muncy then tacked on insurance with a single off Eduard Bazardo in the top half of that same inning, worth 15.2 points of win probability.

By the final numbers, Butler finished as Oakland's most impactful offensive player with a cumulative WPA of plus 21.8 and an RE24 of plus 1.4, while Walton contributed plus 18.5 WPA and plus 1.6 RE24 to anchor the middle of the order. On the mound, Medina was the most valuable arm in the game at plus 20.6 WPA, with Scott Blewett adding plus 11.6 and Gabe Speier contributing plus 6.6 in support. Oakland collected 14 hits without an error, and the DiamondIQ model's estimate of Seattle's win probability fell from 62 percent before first pitch to zero by game's end.