DataBaseball
2026
Aaron Barrett headshot

Pitcher · 2020

Aaron Barrett

Age
32
B/T
R/R
Height
6' 3"
Weight
230 lb
Born
January 2, 1988 in Evansville, IN, USA
MLB debut
March 31, 2014
dbWAR
.5
3 season(s)
IP
1.2
ERA
10.80
FIP
7.39
K/9
5.4
FIP−
166
100 = avg

Aaron Barrett is a relief pitcher for the Washington Nationals. In 2020 he struck out 1 batter over 1.2 innings across 2 appearances, going 0-0. His ERA of 10.80 was 142.5% higher than the league average of 4.45. Stripping out defence, his 7.39 FIP suggests he pitched better than his ERA shows. He missed bats on 0.0% of swings, walked 22.2% of the batters he faced and struck out 11.1%. 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, 2020.

FIP7.39
K/95.4
WHIP2.40
WAR-.0

Pitching

Standard and advanced, by season.

Trend
2020201.2000221210.807.392.405.410.8243166-0.0
2019302.1000541415.4313.073.863.915.4342290-0.2
201540029.133028153574.602.211.1910.72.1116560.8

Platoon splits

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

Opponent batting by the side the hitter bats from, 2020. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
SplitPAABHHRBBSOAVGOBPSLGwOBAK%
vs LHB320011.000.333.000.00033.3%
vs RHB642010.500.667.500.5400.0%

Pitch sequencing

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

ShowBatter
SliderSinker

Select a count to see exactly what Aaron Barrett throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2020.

Slider51.6%1681.02,17725.0%0.0%
Sinker45.2%1489.81,95935.7%0.0%
Aaron Barrett'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 Aaron Barrett beside up to three others.

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Aaron Barrett
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.