DataBaseball
2026
J.P. Feyereisen headshot

Pitcher · 2025

J.P. Feyereisen

Age
32
B/T
R/R
Height
6' 2"
Weight
215 lb
Number
#40
Born
February 7, 1993 in River Falls, WI, USA
MLB debut
July 24, 2020
Drafted
2014, round 16
College
Wisconsin-Stevens Point
High school
River Falls
dbWAR
-.4
2 season(s)
IP
4.0
ERA
11.25
FIP
8.39
K/9
9.0
FIP−
202
100 = avg

J.P. Feyereisen is a relief pitcher for the Los Angeles Dodgers. In 2025 he struck out 4 batters over 4.0 innings across 4 appearances, going 0-2. His ERA of 11.25 was 170.5% higher than the league average of 4.16. Stripping out defence, his 8.39 FIP suggests he pitched better than his ERA shows. He missed bats on 20.0% of swings (12.3% of every pitch he threw), walked 4.3% of the batters he faced and struck out 17.4%. His -0.2 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.

League context

Percentile among qualified pitchers, 2025.

FIP8.39
K/99.0
WHIP3.00
WAR-.2

Platoon splits

How left- and right-handed hitters fare against him.

Opponent batting by the side the hitter bats from, 2025. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB985112.625.6671.250.78722.2%
vs RHB14146102.429.429.714.48614.3%

Pitch sequencing

What J.P. Feyereisen throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter
ChangeupFour-seamSlider

Select a count to see exactly what J.P. Feyereisen throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2025.

Changeup44.4%3687.01,65044.4%21.7%
Four-Seam Fastball34.6%2891.22,27060.7%21.1%
Slider21.0%1783.32,64035.3%12.5%
J.P. Feyereisen's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters.

Pitching

Standard and advanced, by season.

Trend
2025404.00201154111.258.393.009.02.3271202-0.2
202410011.00111110958.186.711.457.44.1201165-0.3

Head to head

Put J.P. Feyereisen beside up to three others.

Compare — add up to 3 more players
J.P. Feyereisen
How these are computed

wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.