Players · G · Pitcher · 2021

Javy Guerra

Washington Nationals National League East

Age: 36
B/T: R/R
Height: 6' 1"
Weight: 215 lb

Born: October 31, 1985 in Denton, TX, United States
MLB debut: May 15, 2011

dbWAR: .2
IP: 6.0
ERA: 16.50
FIP: 11.34
K/9: 6.0
FIP−: 266

Javy Guerra was a relief pitcher for the Washington Nationals. In 2021 he struck out 4 batters over 6.0 innings across 6 appearances, going 0-1. His ERA of 16.50 was 286.8% higher than the league average of 4.27. Stripping out defence, his 11.34 FIP suggests he pitched better than his ERA shows. He missed bats on 14.7% of swings (7.4% of every pitch he threw), walked 8.1% of the batters he faced and struck out 10.8%. His -0.5 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, 2021.

FIP11.34

K/96.0

WHIP2.50

WAR-.5

WAR by season

Pitching

Standard and advanced, by season.


2021	WSH	6	6.0	0	1	0	12	11	4	3	16.50	11.34	2.50	6.0	4.5	387	266	-0.5
2020	WSH	14	15.2	0	0	0	19	7	13	7	4.02	4.53	1.66	7.5	4.0	90	102	0.1
2019	WSH/TOR	51	67.2	3	1	2	67	35	57	17	4.66	4.25	1.24	7.6	2.3	103	94	0.7
2018	MIA	32	35.2	1	1	1	42	22	30	12	5.55	4.20	1.51	7.6	3.0	134	101	0.1
2017	MIA	16	21.0	1	1	0	23	7	12	7	3.00	4.25	1.43	5.1	3.0	69	98	0.1
2016	LAA	7	6.1	0	0	0	5	4	4	7	5.68	7.73	1.89	5.7	9.9	136	184	-0.2
2015	CWS	3	1.2	0	0	0	2	0	0	1	0.00	4.93	1.80	0.0	5.4	0	125	-0.0

Batting

Standard and advanced, by season.


2021	WSH	1	1	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.3	-122	-0.0
2019	WSH	5	5	2	.000	.000	.000	.000	.000	0.0%	40.0%	.000	-1.4	-116	-0.1
2017	MIA	1	1	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.3	-127	-0.0

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2021. 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	18	12	8	2	3	2	.667	.765	1.250	.782	11.1%
vs RHB	19	16	4	1	0	2	.250	.278	.500	.319	10.5%

Hot and cold zones

Batting average by pitch location, 2021.

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 .243.

Pitch sequencing

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

ShowBatter

Four-seamSliderSinkerCurveballChangeup

Select a count to see exactly what Javy Guerra throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	45.9%	68	91.7	2,127	51.5%	14.3%	12	—	—
Slider	33.8%	50	87.9	2,068	46.0%	20.8%	9	—	—
Curveball	8.8%	13	78.5	2,314	30.8%	14.3%	3	—	—
Sinker	8.8%	13	90.8	2,031	38.5%	0.0%	3	—	—

Javy Guerra'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 Javy Guerra beside up to three others.

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Javy Guerra

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.