DJ Herz
P | Bats/Throws: R/L | 6' 2" 197LBS | Age: 23
Draft: 2019 | Rd: 8, #252, Chicago Cubs | Terry Sanford HS
W L ERA G GS SV IP SO WHIP
2024 4 9 4.16 19 19 0 88.2 106 1.26
1 Season 4 9 4.16 19 19 0 88.2 106 1.26
G W-L ERA IP SO WHIP
2024 19 4-9 4.16 88.2 106 1.26
1 Season 19 4-9 4.16 88.2 106 1.26
MLB Percentile Rankings
Movement Profile (Induced Break)
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Statcast Statistics

Season Age Pitches Batted
Balls
Barrels Barrel % Barrel/PA Exit
Velocity
Max EV Launch
Angle
LA Sweet-
Spot %
XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2024 23 1586 236 19 8.1 5.0 89.4 113.3 18.0 30.9 .208 .340 .294 .281 .340 34.7 27.7 9.4 4.16 3.26
Player 1586 236 19 8.1 5.0 89.4 113.3 18.0 30.9 .208 .340 .294 .281 .340 34.7 27.7 9.4
MLB 7.0 4.8 88.5 122.4 12.3 33.2 .245 .405 .316 .315 .368 36.5 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Herz relies on 4 pitches.
Four Seamer
(54.2%) ,
Changeup
(24.5%) ,
Slider
(17.9%) ,
Knuckle Curve
(3.3%) ,


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Pitch Tracking



Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2024 36.9 31.4 24.2 7.6 39.8 33.9 26.3 5.1 24.2 31.8 25.0 5.9 8.1 5.0
Player 36.9 31.4 24.2 7.6 39.8 33.9 26.3 5.1 24.2 31.8 25.0 5.9 8.1 5.0
MLB 44.4 23.8 24.7 7.1 37.2 37.5 25.2 3.9 32.6 24.8 24.4 5.9 7.0 4.8
! Note: All figures in this table cover the period 2015-present.

Pitch Movement


How this works: This section shows two different ways to evaluate pitch movement. On the left, “Total Movement” shows the real-world movement of a pitch, including the forces of gravity, which affects every pitch thrown. Since gravity requires time, and slower pitches aren't 'better' just because they have more time to move, a pitch's movement is compared to other pitches of the same pitch type, within +/- 2 MPH and +/- 0.5 feet of extension/release. On the right, Induced Movement (or IVB) is reported without gravity, and attempts to isolate movement created by the pitcher's ability to spin and manipulate the ball.
Total Movement (in inches, w/ gravity)Induced Movement (in inches, w/o gravity)
YearPitchTeamHand#MPHVertical
Drop
vs.
Comparable
Horizontal
Break
vs.
Comparable
Vertical
Break
vs. AvgHorizontal
Break
vs. Avg
2024 4-Seam Fastball WSH L 860 93.5 15.4 -0.1 12.4ARM 5.1 15.9 0.3 12.4ARM 4.2
2024 Slider WSH L 284 86.1 34.0 -1.1 0.2GLV -4.4 3.0 -1.5 0.2GLV -4.9
2024 Curveball WSH L 53 81.2 43.7 -7.1 0.2GLV -8.2 -2.3 -5.7 0.2GLV -7.2
2024 Changeup WSH L 389 83.5 33.1 0.3 15.5ARM 1.8 6.1 -0.2 15.5ARM 1.4
! Note: Years are in reverse order.

Run Values by Pitch Type

Year Pitch Type Team RV/100 Run Value Pitches % PA BA SLG wOBA Whiff% K% PutAway % xBA xSLG xwOBA Hard Hit %
2024 4-Seam Fastball 1.0 9 860 54.2 193 .222 .317 .302 30.5 32.1 22.7 .194 .322 .282 41.5
2024 Changeup -0.8 -3 389 24.5 106 .224 .388 .299 26.0 21.7 15.6 .224 .356 .279 23.7
2024 Slider -0.6 -2 284 17.9 78 .229 .429 .322 27.5 25.6 17.5 .202 .345 .283 34.0
2024 Curveball 2.9 2 53 3.3 5 .200 .200 .180 53.3 20.0 16.7 .424 .572 .430 75.0
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2024 Changeup 386 83.6 92 17.1 9:30 9:30 0
2024 Curveball 53 81.2 22 4.6 4:30 6:00 -90
2024 4-Seam Fastball 852 93.5 99 20.0 10:45 10:45 0
2024 Slider 280 86.1 15 2.8 12:15 12:15 0
! Note: Years are in reverse order.
! Note: This table is showing data from the PITCHER perspective.
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Pitcher Arm Angle

! Note: Data is available from 2020 through the present.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2024 382 1,586 3 18 -8 -8 5
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Plate Discipline

Season Pitches Zone % Zone Swing % Zone Contact % Chase % Chase Contact % Edge % 1st Pitch Strike % Swing % Whiff % Meatball % Meatball Swing %
2024 1,586 50.6 69.3 76.1 27.9 55.3 41.4 60.7 48.9 29.3 8.6 79.6
Player 1,586 50.6 69.3 76.1 27.9 55.3 41.4 60.7 48.9 29.3 8.6 79.6
MLB 48.7 67.0 82.0 28.5 57.8 42.6 61.0 47.2 25.0 7.3 76.3
! Note: All figures in this table cover the period 2015-present.

Percentile Rankings

Year xwOBA /
xERA
xBA xSLG xISO xOBP Brl Brl% EV Hard
Hit%
K% BB% Whiff% Chase
Rate
FB
Velo
FB
Spin
CB
Spin
Extension
2024 81 86 80 69 76 42 41 32 81 81 29 78 41 40 70 8 74
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Expected Home Runs

Adjusted

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2024 24.0 11 9.9 1 4 8 5 45.5
Player 24.0 11 9.9 1 4 8 5 45.5
Note: xHR tells how many of this pitcher's home runs allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Expected Home Runs by Park

Adjusted

Year HR
2024 11 8 11 9 10 11 12 10 9 7 10 13 10 8 9 11 9 7 11 12 10 10 13 11 6 8 10 10 11 12 9
Player 11 8 11 9 10 11 12 10 9 7 10 13 10 8 9 11 9 7 11 12 10 10 13 11 6 8 10 10 11 12 9
Note: xHR tells how many of this pitcher's home runs allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2024 Shades 382 .294 290 1 0.3 92 18 19.6
! Note: Shifts are through the 2022 season, Shaded starting from the 2023 season, Shift: three or more infielders are on the same side of second base, Shade: positioned outside of their typical responsible slices of the field.
Learn more about how positioning is defined here

Pitch Tempo

Bases EmptyRunners On Base
SeasonTeamPitchesTempoFast %Slow %PitchesTempoFast %Slow %
2024 459 14.0 69.1% 0.0% 231 17.2 11.3% 1.3%

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Pitch Distribution