P · 2021

Jon Duplantier

Arizona Diamondbacks National League WestP

Age: 27
B/T: L/R
Height: 6' 4"
Weight: 229 lb

Born: July 11, 1994 in Newark, DE, USA
MLB debut: April 1, 2019

dbWAR: -.2
PA: 3
AVG: .000
OBP: .333
SLG: .000
wRC+: 53

Jon Duplantier is a pitcher for the Arizona Diamondbacks. In 2021 he hit 0 home runs and knocked in 0 RBIs, notching 0 hits across 3 plate appearances in 2 games. His batting average was .000, 100.0% lower than the league average of .244. He reached base at a .333 clip and slugged .000, for an OPS of .333, 54.2% lower than the league mark of .728. Adjusted for his ballpark and league, his 53 wRC+ puts his offence 47% below average. That comes to -0.0 dbWAR — -0.2 runs with the bat, -0.0 on the bases, +0.0 for the position he plays, against replacement level. It includes no fielding: defensive runs are proprietary and are not estimated here, so the figure credits playing a demanding position but not playing it well.

League context

Percentile among qualified batters, 2021.

wRC+53

wOBA.251

ISO.000

BB%0.0%

WAR-.0

How the WAR is built

Runs above replacement, 2021. These four terms sum to -0.1 runs, divided by runs-per-win to give WAR.

BattingBaserunningPositionReplacement

WAR by season

Batting

Standard and advanced, by season.

																				Trend
2021	2	3	0	0	0	0	0	2	.000	.333	.000	.000	—	0.0%	66.7%	.251	-0.2	53	-0.0
2019	7	8	1	0	0	0	0	5	.125	.125	.125	.000	.333	0.0%	62.5%	.109	-1.5	-45	-0.1

Pitching

Standard and advanced, by season.

																			Trend
2021	4	4	13.0	0	3	0	19	19	12	8	13.15	8.63	2.08	8.3	5.5	308	202	-0.5
2019	15	3	36.2	1	1	1	39	18	34	18	4.42	3.95	1.55	8.3	4.4	98	88	0.4

Platoon splits

How he hits left- and right-handed pitching.

Season

Batting by the hand the pitcher throws with, 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 LHP	2	1	0	0	0	1	.000	.500	.000	.377	50.0%
vs RHP	1	1	0	0	0	1	.000	.000	.000	.000	100.0%

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	33	28	8	2	5	6	.286	.394	.536	.401	18.2%
vs RHB	37	31	11	3	3	6	.355	.444	.710	.483	16.2%

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.

Situational hitting

How Jon Duplantier hits by base state, outs, score and late-game pressure — each read against his own season line.

Split by

By who is on base when he comes up. The season line is repeated as the baseline.
Situation	PA	AB	H	HR	RBI	BB	SO	AVG	OBP	SLG	wOBA
All situations	3	—	—	—	—	—	—	.000	.333	.000	.251
Bases empty · thin	1	1	0	0	0	0	1	.000	.000	.000	.000
Runners on · thin	2	1	0	0	0	0	1	.000	.500	.000	.377
RISP · thin	2	1	0	0	0	0	1	.000	.500	.000	.377

Runners on includes runners in scoring position, which is the convention every reference uses. Rows under 25 plate appearances are marked thin — at that size a rate moves several dozen points on one hit. Counted from play-by-play, 2021.

Pitch sequencing

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

ShowBatter

Four-seamSinkerSliderKnuckle curveChangeup

Select a count to see exactly what Jon Duplantier throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2021.


Four-Seam Fastball	36.7%	99	91.2	2,209	45.5%	29.3%
Sinker	24.8%	67	91.0	2,095	46.3%	16.7%
Slider	16.3%	44	84.3	2,195	47.7%	20.0%
Knuckle Curve	13.3%	36	78.9	2,401	33.3%	14.3%
Changeup	8.9%	24	83.8	1,643	33.3%	10.0%

Jon Duplantier'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.

Head to head

Put Jon Duplantier beside up to three others.

Compare — add up to 3 more players

Jon Duplantier

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.