2024 Stats
W-L
4-9
ERA
4.16
WHIP
1.26
K
106
SV
0
2025 Projections
2025 Fantasy Outlook
Herz burst onto the scene for the Nationals in his third career start in June when he fanned 13 batters while yielding just one hit over six shutout innings against the Marlins. The left-hander added another double-digit strikeout game in July and finished his rookie season with an impressive 27.8 percent strikeout rate. The biggest knock on Herz as a prospect was his lack of control, as he's handed out free passes at an ugly 15.4 percent clip in the minors. He got that rate down to 9.4 percent in 19 starts with the Nats, which is still high but acceptable when paired with the swing-and-miss. Herz's four-seamer, changeup and slider made up 97 percent of his pitches in 2024 and all three offerings produced the exact same .283 xwOBA, which is excellent. There's blowup risk with the 24-year-old, but he has real upside if he can keep the walks to a dull roar. Read Past Outlooks
Cleans up mechanics over offseason
Herz focused on adding strength and cutting out unneeded movement in his pitching mechanics this offseason, leaving him optimistic that he'll be able to build off a promising rookie season in 2025, Spencer Nusbaum of The Washington Post reports. "Everything's in the zone, everything's where you want it. And it's cool to see that all of my bullpens have been like that so far," Herz said Saturday, after his first official bullpen session of spring training. "Now it's time to translate to the game."
ANALYSIS
After some early struggles upon his initial call-up to the big leagues in early June, Herz settled in nicely following the All-Star break and was arguably performing as Washington's best starter by season's end. Altogether, Herz turned in a 4.16 ERA, 1.26 WHIP and 106:36 K:BB in 88.2 innings with the big club, but he'll still have to fight for a back-end rotation spot throughout spring training. Herz displayed a well-developed fastball and changeup as a rookie, but honing the command of his breaking pitches this spring will likely be essential if he's to break camp with the big club. Herz has cleaned up his delivery from the windup and eliminated an unnecessary backward step he had been taking last season, resulting in a smoother operation.
After some early struggles upon his initial call-up to the big leagues in early June, Herz settled in nicely following the All-Star break and was arguably performing as Washington's best starter by season's end. Altogether, Herz turned in a 4.16 ERA, 1.26 WHIP and 106:36 K:BB in 88.2 innings with the big club, but he'll still have to fight for a back-end rotation spot throughout spring training. Herz displayed a well-developed fastball and changeup as a rookie, but honing the command of his breaking pitches this spring will likely be essential if he's to break camp with the big club. Herz has cleaned up his delivery from the windup and eliminated an unnecessary backward step he had been taking last season, resulting in a smoother operation.
Pitching Stats
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2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
83
Last 10 Games
85
Last 5 Games
83
How many pitches does DJ Herz generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does DJ Herz generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2022
-8%
BAA vs RHP
2024
-8%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2022vs Left | .238 | 23 | 8 | 19 | 3 | |||
| Since 2022vs Right | .219 | 83 | 28 | 57 | 8 | |||
| 2024vs Left | .238 | 23 | 8 | 19 | 3 | |||
| 2024vs Right | .219 | 83 | 28 | 57 | 8 | |||
| 2023vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2023vs Right | 0 | 0 | 0 | 0 | 0 | |||
| 2022vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2022vs Right | 0 | 0 | 0 | 0 | 0 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2022
-30%
ERA at Home
2024
-30%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2022Home | 3.61 | 1.24 | 57.1 | 10.8 | 3.5 | ||||
| Since 2022Away | 5.17 | 1.31 | 31.1 | 10.6 | 4.0 | ||||
| 2024Home | 3.61 | 1.24 | 57.1 | 10.8 | 3.5 | ||||
| 2024Away | 5.17 | 1.31 | 31.1 | 10.6 | 4.0 | ||||
| 2023Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2023Away | 0 | 0 | 0 | 0 | 0 | ||||
| 2022Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2022Away | 0 | 0 | 0 | 0 | 0 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does DJ Herz compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
2.94K/9
10.8BB/9
3.7HR/9
1.1Fastball
93.6 mphERA
4.16WHIP
1.26BABIP
.311GB/FB
0.93Left On Base
69.4%Exit Velocity
81.1 mphBarrels/BBE
4.5%Spin Rate
2283 rpmBalls Hit 95+ MPH
20.0%Swinging Strike
13.5%Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Sent to minors
The Nationals optioned Herz to the rookie-level Florida Complex League on Friday, Bobby Blanco of MASNSports.com reports.
ANALYSIS
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Allows one run in loss
Herz (4-9) took the loss against the Royals on Wednesday, allowing one run on three hits and three walks with three strikeouts over five innings.
ANALYSIS
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Crumbles in fourth inning
Herz (4-8) took the loss Wednesday versus the Mets, allowing seven runs on six hits and three walks while striking out five over 3.1 innings.
ANALYSIS
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Earns fourth win
Herz (4-7) yielded a run on four hits and a walk over five innings Friday, striking out five and earning a win over the Marlins.
ANALYSIS
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Fires five hitless frames
Herz (3-7) earned the win over Pittsburgh in the first game of Saturday's doubleheader, issuing three walks and striking out five batters over five hitless and scoreless innings.
ANALYSIS
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