Jonathan BowlanPHI · RP

2026 review

Jonathan Bowlan was a high-strikeout reliever who missed bats and finished stretches, posting a 3.36 ERA and 1.03 WHIP in 56.1 IP across 59 games with a 31.9 K% and a 6.6 BB% over 229 BF, adding 2 saves and 14 holds. A right groin strain sent him to the 15-day IL Apr 13, and after a rehab assignment Apr 26 he was activated Apr 28, missing 15 regular-season days. Undrafted in NFBC drafts, he finished 317th of 1472 in the TDK LABS 5x5 value rank and 69th of 575 relievers. His 31.9 K% over 229 BF was the 20th highest of 517 pitchers with 100+ BF, and his 14.3 SwStr% over 967 pitches was the 45th highest of the same pool. His 3.36 ERA ran 0.51 above his 2.85 xERA over 229 BF. Opposing left-handed batters managed just .180/.262/.279 over 126 PA against him, while right-handers did better at .230/.274/.420 over 106 PA. The TDK LABS card had him back after his rehab outing in early May, carrying a heavy workload as a setup arm by late Jul, and by mid-Aug flashing rising velocity after a move to Philadelphia's bullpen.