DataBaseball
2026
Diego Castillo headshot

Players · C · Pitcher · 2024

Diego Castillo

Age
30
B/T
R/R
Height
6' 3"
Weight
268 lb
Number
#63
Born
January 18, 1994 in Cabrera, Dominican Republic
MLB debut
June 6, 2018
dbWAR
2.9
9 season(s)
IP
10.0
ERA
2.70
FIP
4.37
K/9
5.4
FIP−
107
100 = avg

Diego Castillo was a relief pitcher for the Minnesota Twins. In 2024 he struck out 6 batters over 10.0 innings across 7 appearances, going 0-0. His ERA of 2.70 was 33.8% lower than the league average of 4.08. Stripping out defence, his 4.37 FIP suggests that his ERA had some help behind him. He missed bats on 18.4% of swings (7.9% of every pitch he threw), walked 18.6% of the batters he faced and struck out 14.0%. His 0.0 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.

FIP4.37
K/95.4
WHIP1.60
WAR.0

WAR by season

1.00.4-0.318192021222324

Pitching

Standard and advanced, by season.

Trend
2024MIN7010.000083682.704.371.605.47.2661070.0
2023SEA808.200076776.237.411.627.37.3144171-0.3
2022SEA59054.1737402253223.643.681.148.83.692930.5
2021TB/SEA61058.15516401875172.783.740.9811.62.665880.6
2020TB22021.230412423111.664.531.069.64.6371020.1
2019TB65668.2588592681263.413.721.2410.63.476831.0
2018TB431156.2420362065183.183.300.9510.32.977801.0

Batting

Standard and advanced, by season.

Trend
2019TB11000001.000.000.000.000—0.0%100.0%.000-0.3-123-0.0
2018TB11000001.000.000.000.000—0.0%100.0%.000-0.3-123-0.0

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 LHB17133032.231.353.231.28211.8%
vs RHB26215054.238.385.333.33515.4%

Pitch sequencing

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

ShowBatter
SliderSinkerFour-seamChangeup

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

Pitch arsenal

What he throws, how hard, how often it misses, and what hitters do with it.

Slider62.7%11186.92,36947.7%26.5%19.158.478
Sinker25.4%4595.12,05528.9%0.0%9——
Four-Seam Fastball9.6%1796.42,02941.2%11.1%5——
Diego 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. BAA and OPS are what hitters did against each pitch, credited to the one that ended the plate appearance, and are left blank under 15 at-bats.

Head to head

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Diego Castillo
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.