DataBaseball
2026
Max Castillo headshot

Pitcher · 2023

Max Castillo

Age
24
B/T
R/R
Height
6' 2"
Weight
280 lb
Number
#68
Born
May 4, 1999 in Caracas, Venezuela
MLB debut
June 19, 2022
dbWAR
-.4
2 season(s)
IP
20.1
ERA
4.43
FIP
5.32
K/9
4.4
FIP−
123
100 = avg

Max Castillo is a relief pitcher for the Kansas City Royals. In 2023 he struck out 10 batters over 20.1 innings across 7 appearances, going 0-1. His ERA of 4.43 was 2.2% higher than the league average of 4.33 — 5th of 23 on his team, and 314th of 550 among MLB pitchers with 20+ innings. Stripping out defence, his 5.32 FIP suggests that his ERA had some help behind him. He missed bats on 16.2% of swings (7.9% of every pitch he threw), walked 10.1% of the batters he faced and struck out 11.2%. His -0.1 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.

FIP5.32
K/94.4
WHIP1.43
WAR-.1

Pitching

Standard and advanced, by season.

Trend
20237020.101020101094.435.321.434.44.0102123-0.1
202214639.1020382637155.955.171.358.53.4150130-0.3

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 LHB32264044.154.281.154.20612.5%
vs RHB574916256.327.411.571.42210.5%

Pitch sequencing

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

ShowBatter
Four-seamSliderChangeupSinker

Select a count to see exactly what Max Castillo throws in it.

Pitch arsenal

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

Four-Seam Fastball32.7%11293.52,19955.4%20.4%
Slider31.6%10883.62,39740.7%20.4%
Changeup26.0%8987.11,58431.5%10.9%
Sinker9.6%3393.12,15345.5%0.0%
Max Castillo'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 Max Castillo beside up to three others.

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Max Castillo

Similar players

Nearest 2023 seasons by command, run prevention and role, on rate statistics rather than totals.

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.