DataBaseball
2026
Michael Plassmeyer headshot

Pitcher · 2023

Michael Plassmeyer

Age
27
B/T
L/L
Height
6' 2"
Weight
197 lb
Born
November 5, 1996 in St. Louis, MO, USA
MLB debut
August 23, 2022
dbWAR
-.3
2 season(s)
IP
3.2
ERA
22.09
FIP
14.16
K/9
9.8
FIP−
327
100 = avg

Michael Plassmeyer is a starting pitcher for the Philadelphia Phillies. In 2023 he struck out 4 batters over 3.2 innings across 1 appearance, 1 of them starts, going 0-1. His ERA of 22.09 was 410.0% higher than the league average of 4.33. Stripping out defence, his 14.16 FIP suggests he pitched better than his ERA shows. He missed bats on 25.5% of swings (14.1% of every pitch he threw), walked 0.0% of the batters he faced and struck out 17.4%. His -0.4 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, 2023.

FIP14.16
K/99.8
WHIP2.18
WAR-.4

Pitching

Standard and advanced, by season.

Trend
2023113.2010894022.0914.162.189.80.0510327-0.4
2022207.101093713.683.391.368.61.293850.1

Platoon splits

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

Opponent batting by the side the hitter bats from, 2023. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB762002.333.429.333.35728.6%
vs RHB16146302.429.5001.143.65312.5%

Pitch sequencing

What Michael Plassmeyer throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter
Four-seamChangeupSlider

Select a count to see exactly what Michael Plassmeyer throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2023.

Four-Seam Fastball61.2%5288.82,40955.8%25.8%
Changeup23.5%2083.11,62930.0%33.3%
Slider15.3%1376.42,37846.2%14.3%
Michael Plassmeyer'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.

Head to head

Put Michael Plassmeyer beside up to three others.

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Michael Plassmeyer
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.