DataBaseball
2026
Zach McAllister headshot

Pitcher · 2023

Zach McAllister

Age
36
B/T
R/R
Height
6' 6"
Weight
240 lb
Number
#34
Born
December 8, 1987 in Peoria, IL, USA
MLB debut
July 7, 2011
dbWAR
2.0
5 season(s)
IP
5.1
ERA
10.13
FIP
7.94
K/9
8.4
FIP−
183
100 = avg

Zach McAllister is a relief pitcher for the New York Yankees. In 2023 he struck out 5 batters over 5.1 innings across 7 appearances, going 0-0. His ERA of 10.13 was 133.7% higher than the league average of 4.33. Stripping out defence, his 7.94 FIP suggests he pitched better than his ERA shows. He missed bats on 17.4% of swings (9.8% of every pitch he threw), walked 6.9% of the batters he faced and struck out 17.2%. 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, 2023.

FIP7.94
K/98.4
WHIP2.06
WAR-.2

Pitching

Standard and advanced, by season.

Trend
2023705.1000965210.137.942.068.43.4234183-0.2
201844045.0120573139106.204.471.497.82.01491080.1
201750062.0220531866212.613.771.199.63.060870.7
201653252.1320532054233.444.011.459.34.082960.4
201561169.0441702384233.003.151.3511.03.076791.0

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 LHB972111.286.444.857.52111.1%
vs RHB20197114.368.400.632.43820.0%

Pitch sequencing

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

ShowBatter
Four-seamCutterSweeperChangeupSinker

Select a count to see exactly what Zach McAllister throws in it.

Pitch arsenal

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

Four-Seam Fastball52.8%6591.72,25358.5%13.5%
Cutter28.5%3587.52,20951.4%21.7%
Zach McAllister'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

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Zach McAllister
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.