Players · H · Pitcher · 2026

DJ Herz

Washington Nationals National League East

Age: 25
B/T: R/L
Height: 6' 2"
Weight: 197 lb
Number: #77

Born: January 4, 2001 in Fayetteville, NC, United States
MLB debut: June 4, 2024
Drafted: 2019, round 8
High school: Sanford

dbWAR: 1.4
IP: 4.0
ERA: 9.00
FIP: 5.85
K/9: 9.0
FIP−: 140

DJ Herz is a starting pitcher for the Washington Nationals. In 2026 he struck out 4 batters over 4.0 innings across 1 appearance, 1 of them starts, going 0-1. His ERA of 9.00 is 115.4% higher than the league average of 4.18. Stripping out defence, his 5.85 FIP suggests he pitched better than his ERA shows. He missed bats on 27.6% of swings (12.7% of every pitch he threw), walked 10.5% of the batters he faced and struck out 21.1%. His -0.0 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, 2026.

FIP5.85

K/99.0

WHIP1.75

WAR-.0

WAR by season

Pitching

Standard and advanced, by season.

																				Trend
2026	WSH	1	1	4.0	0	1	0	5	4	4	2	9.00	5.85	1.75	9.0	4.5	215	140	-0.0
2024	WSH	19	19	88.2	4	9	0	76	41	106	36	4.16	3.71	1.26	10.8	3.7	102	91	1.4

Platoon splits

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

Season

Opponent batting by the side the hitter bats from, 2026. 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	2	2	0	0	0	0	.000	.000	.000	.000	0.0%
vs RHB	17	15	5	1	2	4	.333	.412	.733	.478	23.5%

Pitch sequencing

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

ShowBatter

Four-seamChangeupSliderKnuckle curve

Select a count to see exactly what DJ Herz throws in it.

Pitch arsenal

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

Season


Four-Seam Fastball	47.6%	30	93.0	2,305	53.3%	35.7%	6	—	—
Changeup	31.7%	20	82.8	2,291	35.0%	30.0%	7	—	—
Slider	17.5%	11	87.5	2,039	27.3%	0.0%	3	—	—

DJ Herz'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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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.