Athletics at Seattle Mariners: Final Score & Recap

The Athletics handed the Seattle Mariners a 6-4 defeat at T-Mobile Park on April 20, 2026, completing a road victory that the DiamondIQ model's estimate saw swing dramatically over the final innings. Oakland entered as slight underdogs, with the model placing Seattle's pre-game home win probability at 43 percent, but that number eroded steadily before bottoming out at zero by the final out.

The decisive stretch came in the sixth and eighth innings, where Oakland did the bulk of its damage. Shea Langeliers and Nick Kurtz hit back-to-back home runs off Emerson Hancock in the sixth, shifting win probability by 13.6 and 12.1 percentage points respectively and turning a manageable deficit into an Oakland lead. The Athletics then put the game away in the eighth against Casey Legumina, with Tyler Soderstrom delivering a double worth 11.2 points of win probability before Lawrence Butler followed with a single that pushed the swing to 21.3 points, the single largest play of the game. Seattle had scored twice in the first inning and once in the second to build an early cushion, but the Mariners managed only one run in the ninth after Cal Raleigh's flyout against Joel Kuhnel ended the home team's last meaningful threat.

Among the top performers by DiamondIQ model metrics, Cal Raleigh led all batters with a 17.0 percent WPA figure despite his game-ending flyout, while Nick Kurtz posted 14.7 percent WPA and a 0.7 RE24 to anchor Oakland's middle-order surge. Carlos Cortes added 10.0 percent WPA and led all batters with a 1.4 RE24. On the mound, Hogan Harris paced Oakland's pitching staff with 12.1 percent WPA, with Matt Brash and José A. Ferrer each contributing positively at 8.3 and 7.1 percent respectively. Oakland finished with 13 hits and no errors, while Seattle was held to 10 hits in a game the model ultimately viewed as fully decided.