August 29, 2025
Analysis
The rookie southpaw will stick in the rotation after a magnificent first MLB start Monday, when he struck out eight Guardians and allowed just two baserunners over five scoreless frames. Seymour owns a 3.18 ERA, 1.02 WHIP and 34:9 K:BB in 28.1 innings over his first 13 big-league appearances, and the Rays should have a permanent spot available for him if he continues to excel. Seymour will get a prime opportunity to build up more job security against a Nationals offense that has produced an 80 wRC+ versus left-handers this season.