Seth JohnsonPHI · ATH · RP

2026 review

Seth Johnson worked as a relief arm who could miss bats but not the strike zone or the barrel, posting a 5.88 ERA and 1.69 WHIP in 33.2 IP over 28 games and 1 GS for PHI and ATH, with a 25.3 K% and a 12.7 BB% over 158 BF. He shuttled between the majors and the minors with PHI on Mar 19, Apr 13, Apr 14, Apr 18, Apr 21, Jun 18, Jul 8 and Jul 16, then after the move to ATH was optioned Aug 19 and recalled Sep 5. Undrafted in NFBC drafts, he finished 1073rd of 1472 in the TDK LABS 5x5 value rank, and 533rd of 575 players at RP. His 42.7 Hard% over 96 BBE was the 10th highest of 517 pitchers with 100+ BF, and his 5.88 ERA ran 1.19 above his 4.69 xERA over 158 BF. The TDK LABS card had him in low-leverage work in a deep Philadelphia bullpen by mid-Jun despite a strong run before that, and after the move to Oakland it had him working as a high-velo arm in long relief by late Sep.