Players · W · Pitcher · 2017

Tom Wilhelmsen

Arizona Diamondbacks National League West

Age: 34
B/T: R/R
Height: 6' 6"
Weight: 220 lb
Number: #54

Born: December 16, 1983 in Tucson, AZ, United States
MLB debut: April 3, 2011

dbWAR: -.2
IP: 26.1
ERA: 4.44
FIP: 5.32
K/9: 5.8
FIP−: 122

Tom Wilhelmsen was a relief pitcher for the Arizona Diamondbacks. In 2017 he struck out 17 batters over 26.1 innings across 27 appearances, going 1-1. His ERA of 4.44 was 1.9% higher than the league average of 4.36 — 13th of 18 on his team, and 297th of 527 among MLB pitchers with 20+ innings. Stripping out defence, his 5.32 FIP suggests that his ERA had some help behind him. He missed bats on 17.3% of swings (7.5% of every pitch he threw), walked 10.6% of the batters he faced and struck out 15.0%. His -0.1 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, 2017.

FIP5.32

K/95.8

WHIP1.41

WAR-.1

WAR by season

Pitching

Standard and advanced, by season.


2017	AZ	27	26.1	1	1	0	25	13	17	12	4.44	5.32	1.41	5.8	4.1	102	122	-0.1
2016	SEA/TEX	50	46.1	2	4	1	60	35	28	19	6.80	6.38	1.71	5.4	3.7	162	152	-0.9
2015	SEA	53	62.0	2	2	13	56	22	60	29	3.19	3.33	1.37	8.7	4.2	81	84	0.8

Batting

Standard and advanced, by season.

																					Trend
2017	AZ	1	1	0	0	0	0	0	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.3	-115	-0.0	—

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2017. 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	38	33	8	0	5	3	.242	.342	.364	.318	7.9%
vs RHB	75	66	17	4	7	14	.258	.333	.455	.339	18.7%

Hot and cold zones

Batting average by pitch location, 2017.

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 .254.

Pitch sequencing

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

ShowBatter

Four-seamSinkerSliderCurveballChangeup

Select a count to see exactly what Tom Wilhelmsen throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	34.7%	157	95.1	2,317	46.5%	17.3%	41	.268	.762
Sinker	22.3%	101	95.1	2,137	37.6%	4.3%	23	.261	1.110
Slider	21.9%	99	86.2	2,282	37.4%	32.5%	18	.333	.683
Curveball	17.7%	80	78.1	2,278	33.8%	14.3%	15	.133	.369
Changeup	3.3%	15	88.6	1,787	33.3%	33.3%	2	—	—

Tom Wilhelmsen'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

Put Tom Wilhelmsen beside up to three others.

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Tom Wilhelmsen

Similar players

Nearest 2017 seasons by command, run prevention and role, on rate statistics rather than totals.

Warwick SaupoldDET

ERA: 4.88
FIP: 5.39
SO: 44
WAR: -0.3

Very close

Carlos TorresMIL

ERA: 4.21
FIP: 4.89
SO: 56
WAR: 0.0

Very close

Rob ScahillMIL

ERA: 4.43
FIP: 5.75
SO: 10
WAR: -0.2

Very close

Drew StorenCIN

ERA: 4.45
FIP: 4.88
SO: 48
WAR: 0.0

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.