Oakland Athletics at Seattle Mariners: Final Score & Recap

The Oakland Athletics handed the Seattle Mariners a 3-1 defeat at T-Mobile Park on August 29, 2023, overcoming a pre-game environment where the DiamondIQ model's estimate gave Seattle a 79 percent chance of winning. Oakland seized control early, plating a run in the first inning and adding two more in the second to build a 3-0 lead that the Mariners never truly threatened. Seattle's lone run came in the fourth, but the damage was already done, and Oakland's pitching staff held firm the rest of the way, finishing with a 3-1-0 run-hit-error line against Seattle's 1-4-0.

The game's most consequential moment came in the bottom of the second, when Dylan Moore flew out against Ken Waldichuk in a situation that swung win probability 15.9 percent against Seattle. That sequence, combined with Teoscar Hernandez's strikeout to open the bottom of the first — a 9.9 percent swing against the Mariners — set a tone of missed opportunity that Seattle never recovered from. Cal Raleigh's ground into a double play in the fifth off Lucas Erceg cost Seattle another 12.3 percent in win probability, while Cade Marlowe's walk in the fourth had represented the Mariners' most encouraging moment at plus 10.0 percent.

Ken Waldichuk was the game's most impactful performer by the DiamondIQ model's estimate, generating a remarkable plus 24.3 percent in win probability added across his outing. Sean Newcomb and Lucas Erceg followed at plus 14.5 and plus 11.7 percent respectively, giving Oakland a dominant pitching performance across the staff. Among position players, J.P. Crawford led with plus 10.2 percent WPA and a RE24 of plus 0.5, while Shea Langeliers contributed plus 6.9 percent WPA alongside the game's best RE24 among batters at plus 1.6.