Spence (8-10) allowed six runs on seven hits and struck out five without walking a batter over 4.1 innings to take the loss Sunday versus the Mariners.

Spence hadn't allowed more than three runs in any of his previous six starts, but he struggled late in his outing Sunday. The Mariners put up two runs in the fourth inning and another four runs in the fifth, capped off by a Cal Raleigh home run. There were some promising stretches for Spence, but the 26-year-old rookie also had some struggles, ending the year with a 4.58 ERA, 1.38 WHIP and 126:44 K:BB over 151.1 innings across 35 appearances (24 starts). Spence should have a good chance of making the Athletics' rotation in 2025.