JD Hammer
P | Bats/Throws: R/R | 6' 3" 202LBS | Age: 30
Draft: 2016 | Rd: 24, #710, Colorado Rockies | Marshall
W L ERA G GS SV IP SO WHIP
2019 1 0 3.79 20 0 0 19 13 1.42
2021 1 1 4.95 20 0 0 20 22 1.60
2 Seasons 2 1 4.38 40 0 0 39 35 1.51
G W-L ERA IP SO WHIP
2019 20 1-0 3.79 19 13 1.42
2021 20 1-1 4.95 20 22 1.60
2 Seasons 40 2-1 4.38 39 35 1.51
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
2019 24 338 56 4 7.1 4.9 89.5 111.3 16.8 39.3 .284 .479 .315 .377 .391 33.9 15.9 15.9 3.79 6.61
2021 26 405 59 3 5.1 3.2 92.0 110.3 15.1 28.8 .226 .345 .336 .302 .335 50.8 23.4 11.7 4.95 3.84
Player 743 115 7 6.1 4.0 90.8 111.3 16.0 33.9 .253 .406 .327 .337 .362 42.6 19.9 13.6
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

Hammer relies on 4 pitches.
Four Seamer
(59.3%) ,
Slider
(37.3%) ,
Sinker
(2.2%) ,
Curveball
(1.2%) ,


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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
2019 41.1 23.2 28.6 7.1 25.0 46.4 28.6 1.8 28.6 26.8 28.6 7.1 7.1 4.9
2021 42.4 23.7 23.7 10.2 37.3 35.6 27.1 1.7 33.9 23.7 28.8 6.8 5.1 3.2
Player 41.7 23.5 26.1 8.7 31.3 40.9 27.8 1.7 31.3 25.2 28.7 7.0 6.1 4.0
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
2021 Sinker PHI R 9 94.3 15.7 -5.3 15.9ARM 1.0 15.3 -6.5 15.9ARM 1.1
2021 Curveball PHI R 5 75.7 61.3 2.0 8.8GLV -0.9 -13.1 3.0 8.8GLV -0.4
2021 4-Seam Fastball PHI R 240 94.0 14.5 0.3 11.2ARM 4.0 16.6 0.4 11.2ARM 4.0
2021 Slider PHI R 151 82.9 43.1 4.4 4.2GLV -1.9 -3.5 5.3 4.2GLV -1.5
2019 4-Seam Fastball PHI R 185 94.4 14.8 0.5 10.3ARM 2.8 16.5 0.9 10.3ARM 2.8
2019 Slider PHI R 153 84.5 39.1 1.5 3.9GLV -0.9 0.3 1.5 3.9GLV -1.2
! 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 %
2021 4-Seam Fastball -1.4 -3 240 59.3 55 .283 .522 .400 20.6 20.0 15.1 .252 .430 .356 60.0
2021 Slider -0.8 -1 151 37.3 36 .212 .242 .268 30.4 27.8 18.2 .189 .230 .226 39.1
2021 Sinker -1.8 0 9 2.2 2 .500 .500 .450 33.3 50.0 100.0 .240 .276 .223 0.0
2021 Curveball -0.1 0 5 1.2 -- -- -- 50.0 -- 0.0 -- -- -- --
2019 4-Seam Fastball -1.0 -2 185 54.7 42 .250 .500 .406 19.5 14.3 11.3 .322 .537 .438 46.2
2019 Slider 1.2 2 153 45.3 40 .189 .270 .238 22.9 17.5 14.0 .250 .429 .315 23.3
! 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
2021 4-Seam Fastball 239 94.0 99 19.8 1:30 1:15 15
2021 Slider 149 82.9 30 7.2 8:30 7:30 60
! 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
2019 82 338 1 5 -4 -2 0
2021 93 405 -2 6 -4 -5 -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 %
2019 338 46.4 71.3 81.3 19.3 68.6 41.7 62.2 43.5 21.1 6.2 81.0
2021 405 49.4 61.0 80.3 22.4 63.0 45.7 57.0 41.5 24.4 6.7 66.7
Player 743 48.0 65.5 80.8 21.0 65.4 43.9 59.4 42.4 22.9 6.5 72.9
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
2019 70 46 31
2021 60 69 23
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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 %
2019 22.9 2 2.1 0 3 2 0 0.0
2021 23.0 3 1.9 1 0 2 1 33.3
Player 22.9 5 4.0 1 3 4 1 20.0
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
2019 2 2 2 3 2 2 2 2 2 1 2 2 4 2 2 1 1 2 2 2 2 3 3 2 0 2 2 3 4 2 1
2021 3 3 1 1 3 1 3 1 1 1 1 2 1 1 1 3 1 1 3 3 1 3 3 3 1 1 3 3 2 3 3
Player 5 5 3 4 5 3 5 3 3 2 3 4 5 3 3 4 2 3 5 5 3 6 6 5 1 3 5 6 6 5 4
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%
2019 Shifts 82 .315 54 1 1.9 28 12 42.9
2021 Shifts 93 .336 47 4 8.5 46 8 17.4
! 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 %
2019 106 19.4 6.6% 0.9% 59 23.8 0.0% 10.2%
2021 100 20.0 2.0% 1.0% 115 24.7 0.0% 13.0%

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Pitch Distribution