Arizona Diamondbacks at Seattle Mariners: Final Score & Recap

The Seattle Mariners walked off the Arizona Diamondbacks 7-6 in ten innings on May 29, 2026, at T-Mobile Park, with the DiamondIQ model's estimate entering the game at a nearly even 49 percent in favor of Seattle before closing at 100 percent following a decisive extra-inning blow. The game was tight throughout, with Arizona carrying a lead into the sixth inning before Seattle answered with a run in the bottom half, and the two clubs ultimately traded the lead across nine innings before the contest extended to extras. Arizona's most significant moment came in the top of the ninth, when Nolan Arenado was hit by a pitch off Andrés Muñoz to shift win probability 24.0 percent in the Diamondbacks' favor, followed immediately by an Ildemaro Vargas fielder's choice that swung an additional 27.3 percent toward Arizona. Those consecutive plays briefly made Seattle's situation precarious, but Jose Fernandez's pop out off Muñoz erased 18.2 percent of Arizona's leverage, and Muñoz ultimately held the line to force the tenth.

Randy Arozarena ended the game in the bottom of the tenth with a walk-off double off Juan Morillo that shifted win probability 35.9 percent in Seattle's direction and served as the single most impactful plate appearance of the night. Arozarena finished as the game's top batter by WPA at plus-35.8 percent with a RE24 of plus-1.3, while J.P. Crawford contributed plus-25.7 percent WPA and led all position players with a RE24 of plus-2.5. Geraldo Perdomo added plus-27.7 percent WPA for Arizona in a losing effort. On the mound, Gabe Speier was Seattle's most valuable reliever by win probability added at plus-9.8 percent, with Eduard Bazardo and José A. Ferrer also contributing positively. Both clubs finished with identical hit totals of 13 and committed no errors, underscoring how razor-thin the margin was before Arozarena's decisive stroke in the tenth.