Players · W · Pitcher · 2019

Aaron Wilkerson

Milwaukee Brewers National League Central

Age: 30
B/T: R/R
Height: 6' 2"
Weight: 230 lb

Born: May 24, 1989 in Fort Worth, TX, United States
MLB debut: September 15, 2017

dbWAR: -.4
IP: 16.0
ERA: 7.31
FIP: 6.78
K/9: 6.2
FIP−: 150

Aaron Wilkerson was a relief pitcher for the Milwaukee Brewers. In 2019 he struck out 11 batters over 16.0 innings across 8 appearances, going 0-0. His ERA of 7.31 was 62.3% higher than the league average of 4.51. Stripping out defence, his 6.78 FIP suggests he pitched better than his ERA shows. He missed bats on 20.7% of swings (8.7% of every pitch he threw), walked 11.3% of the batters he faced and struck out 13.8%. His -0.3 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, 2019.

FIP6.78

K/96.2

WHIP2.13

WAR-.3

WAR by season

Pitching

Standard and advanced, by season.


2019	MIL	8	0	16.0	0	0	25	13	11	9	7.31	6.78	2.13	6.2	5.1	162	150	-0.3
2018	MIL	3	1	9.0	0	1	12	10	10	3	10.00	8.05	1.67	10.0	3.0	241	194	-0.3
2017	MIL	3	2	10.1	1	0	6	4	7	1	3.48	3.35	0.68	6.1	0.9	80	77	0.2

Batting

Standard and advanced, by season.


2019	MIL	2	3	1	1	2	1	.333	.333	1.333	1.000	.000	0.0%	33.3%	.651	+0.8	325	0.1
2018	MIL	2	2	0	0	0	1	.000	.000	.000	.000	.000	0.0%	50.0%	.000	-0.5	-120	-0.0
2017	MIL	2	4	0	0	0	1	.000	.000	.000	.000	.000	0.0%	25.0%	.000	-1.1	-120	-0.0

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2019. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	41	34	14	3	7	5	.412	.512	.735	.510	12.2%
vs RHB	39	36	11	1	2	6	.306	.333	.444	.328	15.4%

Spray chart

Where every ball he put in play landed, 2019.

Loading 2 batted balls…

Hot and cold zones

Batting average by pitch location, 2019.

Below averageLeague averageAbove average

Batting average by location of the pitch that ended each plate appearance, catcher's view. The bordered square is the strike zone; the outer band is chase territory. Cells with fewer than 8 at-bats are left grey rather than shown as signal. League average on the same attribution is .252.

Pitch sequencing

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

ShowBatter

Four-seamSliderCurveballChangeup

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

Pitch arsenal

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

Season


Four-Seam Fastball	50.5%	168	89.8	2,350	42.9%	22.1%	30	.400	1.267
Slider	17.4%	58	82.7	2,193	29.3%	13.6%	14	—	—
Curveball	17.1%	57	74.5	2,347	40.4%	18.2%	14	—	—
Changeup	15.0%	50	83.2	1,553	46.0%	25.0%	12	—	—

Aaron Wilkerson'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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Aaron Wilkerson

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.