Players · P · Pitcher · 2016

Williams Pérez

Age: 25
B/T: R/R
Height: 6' 0"
Weight: 240 lb

Born: May 21, 1991 in Acarigua, Venezuela
MLB debut: May 8, 2015

dbWAR: -.2
IP: 53.2
ERA: 6.04
FIP: 4.79
K/9: 4.5
FIP−: 114

Williams Pérez was a starting pitcher for the Atlanta Braves. In 2016 he struck out 27 batters over 53.2 innings across 11 appearances, 11 of them starts, going 2-3. His ERA of 6.04 was 44.1% higher than the league average of 4.19 — 21st of 24 on his team, and 458th of 512 among MLB pitchers with 20+ innings. Stripping out defence, his 4.79 FIP suggests he pitched better than his ERA shows. He missed bats on 15.1% of swings (6.8% of every pitch he threw), walked 6.4% of the batters he faced and struck out 11.6%. 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, 2016.

FIP4.79

K/94.5

WHIP1.34

WAR.3

WAR by season

Pitching

Standard and advanced, by season.

																				Trend
2016	ATL	11	11	53.2	2	3	0	57	36	27	15	6.04	4.79	1.34	4.5	2.5	144	114	0.3
2015	ATL	23	20	116.2	7	6	1	130	62	73	51	4.78	4.87	1.55	5.6	3.9	121	123	-0.1

Batting

Standard and advanced, by season.

																					Trend
2016	ATL	10	19	0	0	0	0	0	5	.000	.000	.000	.000	.000	0.0%	26.3%	.000	-4.9	-115	-0.3
2015	ATL	17	34	2	0	0	0	2	13	.071	.133	.071	.000	.133	5.9%	38.2%	.106	-5.7	-49	-0.1

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2016. 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	115	104	31	4	9	16	.298	.357	.462	.349	13.9%
vs RHB	118	106	26	3	6	11	.245	.289	.396	.295	9.3%

Spray chart

Where every ball he put in play landed, 2016.

Loading 14 batted balls…

Hot and cold zones

Batting average by pitch location, 2016.

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 .255.

Pitch sequencing

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

ShowBatter

SinkerCurveballChangeupIN

Select a count to see exactly what Williams Pérez throws in it.

Pitch arsenal

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

Season


Sinker	73.5%	631	91.1	2,141	43.7%	11.5%	161	.267	.723
Curveball	15.4%	132	76.8	1,102	35.6%	27.5%	28	.250	.772
Changeup	9.9%	85	78.9	1,240	48.2%	22.2%	22	.318	.818
Intentional Ball	1.2%	10	76.2	1,550	0.0%	—	0	—	—

Williams Pérez'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 Williams Pérez beside up to three others.

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Williams Pérez

Similar players

Nearest 2016 seasons by command, run prevention and role, on rate statistics rather than totals.

Jordan ZimmermannDET

ERA: 4.87
FIP: 4.42
SO: 66
WAR: 0.9

Derek HollandTEX

ERA: 4.95
FIP: 4.75
SO: 67
WAR: 0.6

Zach EflinPHI

ERA: 5.54
FIP: 5.48
SO: 31
WAR: -0.3

Justin NicolinoMIA

ERA: 4.99
FIP: 4.39
SO: 37
WAR: 0.5

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.