Players · J · Pitcher · 2019

Dan Jennings

Washington Nationals National League East

Age: 32
B/T: L/L
Height: 6' 3"
Weight: 215 lb
Number: #43

Born: April 17, 1987 in Berkeley, CA, United States
MLB debut: April 30, 2012

dbWAR: 2.1
IP: 4.2
ERA: 13.50
FIP: 7.29
K/9: 17.4
FIP−: 162

Dan Jennings was a relief pitcher for the Washington Nationals. In 2019 he struck out 9 batters over 4.2 innings across 8 appearances, going 1-2. His ERA of 13.50 was 199.6% higher than the league average of 4.51. Stripping out defence, his 7.29 FIP suggests he pitched better than his ERA shows. He missed bats on 31.9% of swings (11.2% of every pitch he threw), walked 21.9% of the batters he faced and struck out 28.1%. 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, 2019.

FIP7.29

K/917.4

WHIP3.21

WAR-.1

WAR by season

Pitching

Standard and advanced, by season.


2019	WSH	8	0	4.2	1	2	0	8	7	9	7	13.50	7.29	3.21	17.4	13.5	300	162	-0.1
2018	MIL	72	1	64.1	4	5	1	66	23	45	23	3.22	4.09	1.38	6.3	3.2	78	99	0.4
2017	CWS/TB	77	0	62.2	3	1	0	53	24	51	31	3.45	4.72	1.34	7.3	4.5	79	108	0.1
2016	CWS	64	0	60.2	4	3	1	57	14	46	28	2.08	3.38	1.40	6.8	4.2	50	81	0.9
2015	CWS	53	0	56.1	2	3	0	55	25	46	24	3.99	3.47	1.40	7.3	3.8	101	88	0.6

Batting

Standard and advanced, by season.

																					Trend
2018	MIL	2	3	2	0	0	0	0	1	.667	.667	1.000	.333	1.000	0.0%	33.3%	.719	+1.0	376	0.1	—

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	18	13	3	0	4	5	.231	.444	.231	.322	27.8%
vs RHB	14	11	5	1	3	4	.455	.571	.727	.528	28.6%

Pitch sequencing

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

ShowBatter

SinkerSliderFour-seam

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Pitch arsenal

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

Season


Sinker	53.0%	71	91.2	2,291	46.5%	20.0%	11	—	—
Slider	43.3%	58	82.8	2,518	36.2%	45.0%	13	—	—

Dan Jennings'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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Dan Jennings

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.