DataBaseball
2026
Sean Doolittle headshot

Players · D · Pitcher · 2022

Sean Doolittle

Age
36
B/T
L/L
Height
6' 2"
Weight
218 lb
Number
#62
Born
September 26, 1986 in Rapid City, SD, United States
MLB debut
June 5, 2012
dbWAR
4.4
9 season(s)
IP
5.1
ERA
0.00
FIP
0.86
K/9
10.1
FIP−
22
100 = avg

Sean Doolittle was a relief pitcher for the Washington Nationals. In 2022 he struck out 6 batters over 5.1 innings across 6 appearances, going 0-0. His ERA of 0.00 was 100.0% lower than the league average of 3.97. Stripping out defence, his 0.86 FIP suggests that his ERA had some help behind him. He missed bats on 35.5% of swings (20.0% of every pitch he threw), walked 0.0% of the batters he faced and struck out 35.3%. 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, 2022.

FIP0.86
K/910.1
WHIP0.19
WAR.2

WAR by season

1.50.6-0.31516171819202122

Pitching

Standard and advanced, by season.

Trend
2022WSH605.100010600.000.860.1910.10.00220.2
2021CIN/SEA56049.2311502553234.534.381.479.64.21061030.3
2020WSH1107.202095645.878.281.707.04.7132186-0.3
2019WSH63060.06529632766154.054.251.309.92.390940.6
2018WSH43045.033252186061.601.890.6012.01.239461.5
2017WSH/OAK53051.12024341662102.812.590.8610.91.864591.3
2016OAK44039.023433144583.233.451.0510.41.877820.5
2015OAK12013.21041261553.952.991.249.93.3100750.2

Batting

Standard and advanced, by season.

Trend
2019WSH33000002.000.000.000.000.0000.0%66.7%.000-0.8-116-0.1—

Platoon splits

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

Opponent batting by the side the hitter bats from, 2022. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB991003.111.111.222.14233.3%
vs RHB880003.000.000.000.00037.5%

Pitch sequencing

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

ShowBatter
Four-seamCurveball

Select a count to see exactly what Sean Doolittle throws in it.

Pitch arsenal

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

Four-Seam Fastball74.5%4193.32,27553.7%28.0%15.067.200
Curveball21.8%1278.12,40266.7%66.7%2——
Sean Doolittle'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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Sean Doolittle
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.