Williams Jerez
P | Bats/Throws: L/L | 6' 4" 210LBS | Age: 32
Draft: 2011 | Rd: 2, #81, Boston Red Sox | Grand Street Campus (NY) HS
W L ERA G GS SV IP SO WHIP
2018 0 0 6.00 17 0 0 15 15 1.67
2019 1 0 4.35 12 0 0 10.1 9 2.03
2 Seasons 1 0 5.33 29 0 0 25.1 24 1.82
G W-L ERA IP SO WHIP
2018 17 0-0 6.00 15 15 1.67
2019 12 1-0 4.35 10.1 9 2.03
2 Seasons 29 1-0 5.33 25.1 24 1.82
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
2018 26 288 48 4 8.3 5.6 90.6 110.9 12.4 45.8 .325 .553 .352 .410 .491 47.9 21.1 11.3 6.00 7.82
2019 27 192 30 5 16.7 10.4 90.9 107.2 9.0 36.7 .306 .591 .420 .431 .483 53.3 18.8 18.8 4.36 9.26
Player 480 78 9 11.5 7.6 90.7 110.9 11.1 42.3 .318 .567 .380 .419 .488 50.0 20.2 14.3
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

Jerez relies on 3 pitches.
Four Seamer
(55.2%) ,
Slider
(32.8%) ,
Changeup
(12.0%) ,


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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
2018 37.5 22.9 31.3 8.3 33.3 43.8 22.9 4.2 22.9 16.7 37.5 10.4 8.3 5.6
2019 50.0 23.3 23.3 3.3 40.0 33.3 26.7 6.7 30.0 10.0 26.7 10.0 16.7 10.4
Player 42.3 23.1 28.2 6.4 35.9 39.7 24.4 5.1 25.6 14.1 33.3 10.3 11.5 7.6
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
2019 Changeup PIT L 23 86.3 32.7 2.5 9.4ARM -4.6 4.7 3.2 9.4ARM -4.9
2019 4-Seam Fastball PIT L 106 94.1 18.2 -2.3 9.4ARM 1.3 13.0 -2.7 9.4ARM 1.7
2019 Slider PIT L 63 87.1 31.3 -2.5 1.9GLV -2.1 5.2 -3.6 1.9GLV -3.4
2018 4-Seam Fastball LAA L 176 95.3 16.3 -0.9 11.6ARM 3.4 14.6 -1.0 11.6ARM 3.7
2018 Slider LAA L 58 87.5 31.4 -2.1 0.8GLV -3.3 5.1 -3.4 0.8GLV -4.6
2018 Changeup LAA L 54 87.3 29.3 -2.0 12.0ARM -2.3 7.5 0.1 12.0ARM -2.1
! 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 %
2019 4-Seam Fastball -2.8 -3 106 55.2 28 .476 .762 .573 9.4 3.6 5.9 .424 .758 .546 65.0
2019 Slider 4.9 3 63 32.8 13 .077 .154 .096 30.4 46.2 31.6 .146 .243 .162 28.6
2019 Changeup -2.2 -1 23 12.0 7 .200 .800 .486 45.5 28.6 20.0 .226 .791 .486 33.3
2018 4-Seam Fastball -2.4 -4 176 61.1 45 .368 .658 .478 16.2 15.6 17.9 .404 .694 .503 45.2
2018 Slider -2.8 -2 58 20.1 11 .200 .300 .259 40.0 18.2 12.5 .271 .562 .382 62.5
2018 Changeup -0.8 0 54 18.8 15 .067 .067 .180 48.1 40.0 24.0 .162 .190 .155 44.4
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2018 71 288 -6 3 -2 -1 -6
2019 48 192 0 2 -2 -1 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 %
2018 288 43.8 69.0 78.2 24.1 59.0 41.3 59.2 43.8 27.8 8.0 73.9
2019 192 43.8 69.0 89.7 26.9 62.1 50.0 54.2 45.3 19.5 4.7 88.9
Player 480 43.8 69.0 82.8 25.2 60.3 44.8 57.1 44.4 24.4 6.7 78.1
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
2018 83 43 20
2019 65 21 28
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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 %
2018 24.7 3 2.8 0 1 2 1 33.3
2019 23.6 2 2.1 0 3 0 2 100.0
Player 24.3 5 5.0 0 4 2 3 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
2018 3 3 3 2 3 3 3 3 2 2 3 3 3 3 3 2 3 3 3 3 3 4 3 3 2 2 3 3 3 3 3
2019 2 2 2 2 2 2 2 2 2 2 2 2 4 2 2 2 2 2 2 2 2 3 3 2 2 2 2 2 2 2 2
Player 5 5 5 4 5 5 5 5 4 4 5 5 7 5 5 4 5 5 5 5 5 7 6 5 4 4 5 5 5 5 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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Year to Year Changes

Metric 2018 2019 +/-  
Fastball Velocity 95.3 94.1 -1.2
Offspeed Velocity 87.3 86.3 -1.0
Breaking Velocity 87.5 87.1 -0.4
Exit Velocity 90.6 90.9 0.3
Launch Angle 12.4 9.0 -3.4
Barrel % 8.3 16.7 8.4
Hard Hit % 47.9 53.3 5.4
LA Sweet-Spot % 45.8 36.7 -9.1
xBA .325 .306 -0.019
BA .270 .308 0.038
xwOBA .410 .431 0.021
wOBA .352 .420 0.068
xSLG .553 .591 0.038
SLG .460 .564 0.104
K% 21.1 18.8 -2.3
BB% 11.3 18.8 7.5
Swing % 43.8 45.3 1.5
Whiff% 27.8 19.5 -8.3
In Zone % 43.8 43.8 0.0
Out of Zone % 56.3 56.3 0.0
Out of Zone Swing % 24.1 26.9 2.8
First Pitch Swing % 29.6 35.4 5.8
First Pitch Strike % 59.2 54.2 -5.0
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2018 Shifts 71 .352 44 0 0.0 27 0 0.0
2019 Shifts 48 .420 29 5 17.2 19 7 36.8
! 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 %
2018 94 19.7 7.4% 5.3% 49 23.1 0.0% 12.2%
2019 46 18.2 15.2% 0.0% 39 23.8 0.0% 15.4%

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Pitch Distribution