Players · P · Pitcher · 2017

Mike Pelfrey

Chicago White Sox American League Central

Age: 33
B/T: R/R
Height: 6' 7"
Weight: 240 lb
Number: #34

Born: January 14, 1984 in Wright-Patterson AFB, OH, United States
MLB debut: July 8, 2006

dbWAR: .5
IP: 120.0
ERA: 5.92
FIP: 6.35
K/9: 5.9
FIP−: 146

Mike Pelfrey was a starting pitcher for the Chicago White Sox. In 2017 he struck out 79 batters over 120.0 innings across 34 appearances, 21 of them starts, going 3-12. His ERA of 5.92 was 36.0% higher than the league average of 4.36 — 17th of 21 on his team, and 456th of 527 among MLB pitchers with 20+ innings. Stripping out defence, his 6.35 FIP suggests that his ERA had some help behind him. He missed bats on 17.4% of swings (7.1% of every pitch he threw), walked 11.4% of the batters he faced and struck out 14.5%. His -1.5 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.

FIP6.35

K/95.9

WHIP1.57

WAR-1.5

WAR by season

Pitching

Standard and advanced, by season.


2017	CWS	34	21	120.0	3	12	127	79	79	62	5.92	6.35	1.57	5.9	4.7	136	146	-1.5
2016	DET	24	22	119.0	4	10	160	67	56	46	5.07	5.15	1.73	4.2	3.5	121	123	0.0
2015	MIN	30	30	164.2	6	11	198	78	86	45	4.26	4.00	1.48	4.7	2.5	108	101	1.8

Batting

Standard and advanced, by season.

																					Trend
2015	MIN	2	3	2	0	0	0	0	1	.667	.667	.667	.000	1.000	0.0%	33.3%	.587	+0.6	291	0.1	—

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	259	220	57	15	33	38	.259	.367	.536	.381	14.7%
vs RHB	287	251	70	10	29	41	.279	.362	.446	.353	14.3%

Pitch sequencing

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

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SinkerCurveballSplitterSliderFour-seamUnknown

Select a count to see exactly what Mike Pelfrey throws in it.

Pitch arsenal

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

Season


Sinker	58.7%	1,344	91.9	1,922	44.0%	10.5%	297	.306	.971
Curveball	14.9%	342	70.2	2,030	45.0%	39.4%	39	.205	.715
Splitter	13.5%	310	81.3	1,225	38.1%	25.8%	85	.224	.656
Slider	12.1%	278	82.9	1,962	32.7%	22.9%	45	.178	.549
Four-Seam Fastball	0.5%	12	92.7	1,882	58.3%	0.0%	5	—	—

Mike Pelfrey'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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Mike Pelfrey

Similar players

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

Derek HollandCWS

ERA: 6.20
FIP: 6.45
SO: 104
WAR: -1.7

Chase De JongSEA

ERA: 6.35
FIP: 5.91
SO: 13
WAR: -0.2

Yovani GallardoSEA

ERA: 5.72
FIP: 5.53
SO: 94
WAR: -0.4

Tom KoehlerTOR

ERA: 6.69
FIP: 6.05
SO: 62
WAR: -0.8

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.