Spring reliever wrap-up 2025, NL

Every March, the goal is to ignore the noise with the exception being if the manager commits to a player's role, to carefully watch the injuries, and then to watch for a terrific strikeout rate (K%) and compare it to the walk rate (BB%) to find that high strikeouts and good command have the reliever ready for the season.

Easier said than done.

A lot happens on back fields and under controlled conditions and the scanty numbers of innings by relievers makes it hard to really know what you are even looking at until the reliever gets rocked on April 6 and then you kinda know.

Here are some NL arms that impressed me this spring (for what little it is worth):

NLIPK/BBHERAWHIP
J.Alvarado (PHI) (L)716/320.000.71
J.Romero (STL) (L)813/330.000.75

Almost!

You’re just a few clicks away from accessing this feature and hundreds more throughout the year that have a singular goal in mind: Winning your league. Subscribe to BaseballHQ.com here!

Already a subscriber? Sign in here

More From Relief Pitchers

Injuries and ineffectiveness keep the waiver wire moving. Four pens with changes and a look at who else might change soon.
May 10 2026 3:07am
This column took the best K-BB% relievers and filtered for xERA and HR/F as well to create a list of who performed in April.
May 3 2026 3:06am
This column filters by first two weeks K%-BB% and then looks at the projections to make an early call on whether the elite start is real or not real.
Apr 19 2026 3:07am
Using projections for skills and early-season usage patterns, we look at five more bullpens.
Apr 12 2026 3:05am

Tools