DataBaseball
2026
Humberto Castellanos headshot

Pitcher · 2024

Humberto Castellanos

Age
26
B/T
R/R
Height
5' 11"
Weight
222 lb
Born
April 3, 1998 in Tepatitlan, Jalisco, Mexico
MLB debut
August 4, 2020
Salary, 2024
$740,000
dbWAR
.1
1 season(s)
IP
10.1
ERA
5.23
FIP
3.55
K/9
6.1
FIP−
87
100 = avg

Humberto Castellanos is a relief pitcher for the Arizona Diamondbacks. In 2024 he struck out 7 batters over 10.1 innings across 7 appearances, going 0-0. His ERA of 5.23 was 28.1% higher than the league average of 4.08. Stripping out defence, his 3.55 FIP suggests he pitched better than his ERA shows. He missed bats on 15.6% of swings (7.5% of every pitch he threw), walked 8.3% of the batters he faced and struck out 14.6%. 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, 2024.

FIP3.55
K/96.1
WHIP1.45
WAR.1

Platoon splits

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

Opponent batting by the side the hitter bats from, 2024. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB22216014.286.318.333.29118.2%
vs RHB26205033.250.385.350.33711.5%

Pitch sequencing

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

ShowBatter
SinkerCutterCurveballChangeupFour-seam

Select a count to see exactly what Humberto Castellanos throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2024.

Sinker31.7%5990.61,92035.6%8.7%
Cutter26.9%5087.12,01354.0%19.2%
Curveball14.5%2778.22,39637.0%20.0%
Four-Seam Fastball14.5%2789.52,03951.9%28.6%
Changeup12.4%2385.21,23543.5%5.9%
Humberto Castellanos'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
20247010.1001116745.233.551.456.13.5128870.1

Head to head

Put Humberto Castellanos beside up to three others.

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Humberto Castellanos
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.