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 2 5 4.25 12 12 0 55 68 1.31
1 Season 2 5 4.25 12 12 0 55 68 1.31
G W-L ERA IP SO WHIP
2024 12 2-5 4.25 55 68 1.31
1 Season 12 2-5 4.25 55 68 1.31
MLB Percentile Rankings
Pitch Distribution

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 23 976 150 15 10.0 6.3 90.3 113.1 19.0 30.0 .215 .383 .323 .292 .368 38.0 28.3 7.9 4.25 3.47
Player 976 150 15 10.0 6.3 90.3 113.1 19.0 30.0 .215 .383 .323 .292 .368 38.0 28.3 7.9
MLB 7.0 4.8 88.5 122.4 12.3 33.2 .245 .406 .316 .315 .369 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
(55.2%) ,
Changeup
(23.6%) ,
Slider
(17.4%) ,
Knuckle Curve
(3.8%) ,


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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 37.3 34.0 21.3 7.3 42.7 30.7 26.7 4.7 24.0 32.7 23.3 5.3 10.0 6.3
Player 37.3 34.0 21.3 7.3 42.7 30.7 26.7 4.7 24.0 32.7 23.3 5.3 10.0 6.3
MLB 44.5 23.7 24.8 7.0 37.1 37.5 25.2 3.9 32.7 24.8 24.4 5.8 7.0 4.8
! Note: All figures in this table cover the period 2015-present.

Pitch Movement


How this works: Every pitch is affected by the forces of gravity, which means that every pitch drops on its way from the mound to the plate. These numbers are reported with gravity, which makes them larger and different than other pitch movement numbers you may have seen. Since gravity requires time, and slower pitches aren’t ‘better’ just because they have more time to move, the movement of a pitch is compared to ‘average’ movement by comparing it to other MLB pitch types within +/- 2 MPH and from within +/- 0.5 feet of extension and release.
Vertical Movement (inches) Horizontal Movement (inches)
Year Pitch Team Hand # MPH Inches of Drop vs Avg % vs Avg Inches of Break vs Avg % Break vs Avg
2024 Changeup WSH L 230 83.5 32.7 0.0 0 15.4 1.7 13
2024 Curveball WSH L 37 81.0 44.2 -6.7 -13 0.4 -8.2 -96
2024 4-Seam Fastball WSH L 539 93.5 15.6 -0.1 -1 11.8 4.6 64
2024 Slider WSH L 170 86.3 33.3 -1.4 -4 0.4 -4.3 -91
! Note: Years are in reverse order.
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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 0.6 3 539 55.2 127 .261 .400 .338 32.0 31.5 24.1 .198 .349 .276 42.7
2024 Changeup -0.4 -1 230 23.6 61 .193 .404 .288 25.9 24.6 17.6 .227 .398 .286 25.6
2024 Slider -1.5 -3 170 17.4 48 .268 .585 .407 24.4 25.0 17.4 .216 .427 .334 41.4
2024 Curveball 1.7 1 37 3.8 4 .250 .250 .225 54.5 25.0 20.0 .511 .665 .504 66.7
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.
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Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2024 Changeup 227 83.5 93 17.1 9:30 9:30 0
2024 Curveball 37 81.0 24 5.0 4:30 5:45 -75
2024 4-Seam Fastball 533 93.5 99 19.5 10:45 10:45 0
2024 Slider 167 86.3 18 3.3 12:15 12:30 -15
! Note: This table is showing data from the PITCHER perspective.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2024 240 976 -1 10 -4 -5 0
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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 976 50.9 68.2 75.5 29.2 55.0 41.0 58.8 49.1 29.9 8.9 79.3
Player 976 50.9 68.2 75.5 29.2 55.0 41.0 58.8 49.1 29.9 8.9 79.3
MLB 48.6 67.0 82.0 28.5 57.8 42.6 61.0 47.2 24.8 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 71 83 63 34 81 39 14 16 57 86 50 82 58 41 70 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 24.1 10 8.7 1 2 4 6 60.0
Player 24.1 10 8.7 1 2 4 6 60.0
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 10 7 10 8 8 10 10 8 8 7 9 11 9 8 8 9 7 7 10 10 10 9 10 10 6 7 9 10 10 9 8
Player 10 7 10 8 8 10 10 8 8 7 9 11 9 8 8 9 7 7 10 10 10 9 10 10 6 7 9 10 10 9 8
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 240 .323 181 1 0.6 59 13 22.0
! 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 284 14.0 66.2% 0.0% 137 17.4 11.7% 2.2%

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Pitch Distribution