DataBaseball
2026
Santiago Casilla headshot

Pitcher · 2018

Santiago Casilla

Age
38
B/T
R/R
Height
6' 0"
Weight
210 lb
Number
#46
Born
July 25, 1980 in San Cristobal, Dominican Republic
MLB debut
August 9, 2004
dbWAR
1.4
4 season(s)
IP
31.1
ERA
3.16
FIP
4.05
K/9
6.3
FIP−
98
100 = avg

Santiago Casilla is a relief pitcher for the Oakland Athletics. In 2018 he struck out 22 batters over 31.1 innings across 26 appearances, going 0-0. His ERA of 3.16 was 23.9% lower than the league average of 4.15 — 6th of 21 on his team, and 122nd of 530 among MLB pitchers with 20+ innings. Stripping out defence, his 4.05 FIP suggests that his ERA had some help behind him. He missed bats on 23.9% of swings (9.6% of every pitch he threw), walked 15.2% of the batters he faced and struck out 16.7%. 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, 2018.

FIP4.05
K/96.3
WHIP1.21
WAR.2

Pitching

Standard and advanced, by season.

Trend
201826031.1001181122203.164.051.216.35.776980.2
201763059.04516582857224.274.411.368.73.4981010.3
201662058.02531502365193.573.941.1910.12.985940.5
201567058.04238511862232.793.631.289.63.671920.5

Platoon splits

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

Opponent batting by the side the hitter bats from, 2018. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB645490814.167.281.222.24221.9%
vs RHB675290118.173.343.231.28411.9%

Pitch sequencing

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

ShowBatter
SinkerKnuckle curveFour-seamSliderChangeup

Select a count to see exactly what Santiago Casilla throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2018.

Sinker31.9%15992.72,37340.9%22.5%
Knuckle Curve28.3%14179.72,40443.3%34.5%
Four-Seam Fastball23.2%11693.22,34441.4%12.8%
Slider10.2%5188.82,40531.4%26.7%
Changeup6.4%3285.82,14528.1%20.0%
Santiago Casilla'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 Santiago Casilla beside up to three others.

Compare — add up to 3 more players
Santiago Casilla

Similar players

Nearest 2018 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.