Seattle Mariners at New York Yankees: Final Score & Recap

The New York Yankees handled the Seattle Mariners 10-5 at Yankee Stadium on August 12, 2026, turning what opened as a competitive game into a comfortable home victory. The DiamondIQ model entered with a 64% home win probability and closed at 100%, reflecting how thoroughly New York seized control as the game progressed. Seattle struck first with three runs in the top of the first inning, but the Yankees steadily chipped away and then pulled away decisively, scoring in five of the eight innings they batted while holding the Mariners scoreless over the final four frames.

The game's most consequential sequence came in the bottom of the seventh, when Trent Grisham delivered a double off Gabe Speier that swung win probability by plus 17.7 percentage points, the single largest WPA play of the contest. Grisham had already been the central figure in the bottom of the fifth, when his home run off Bryce Miller added 12.3 percentage points, part of a two-run inning that helped neutralize Seattle's early lead. Spencer Jones contributed substantially as well, with a double in the third off Miller worth plus 16.1 percentage points followed by another double in the fifth worth plus 10.5. Jones did absorb the game's most damaging negative swing, a first-inning strikeout against Miller that cost 10.5 percentage points when New York needed an early answer.

Among the standouts, Grisham led all position players with a combined plus 28.1 WPA and a RE24 of plus 3.3, while Josh Naylor posted plus 21.5 WPA with a plus 1.0 RE24 and Jones finished at plus 17.5 WPA with a plus 2.6 RE24. On the pitching side, Paul Blackburn was the most valuable arm by WPA at plus 15.9, with Tim Hill and Brent Headrick each adding positive contributions in support. The DiamondIQ model leans toward crediting Grisham's back-to-back multi-base hits in the fifth and seventh as the pivotal thread that unraveled Seattle's chances of recovering from its early deficit.