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Williams Jerez
Popularity: ↑ 18%
P | B/T: L/L | 6' 4" 210LBS | Age: 28

Draft: 2011 | Rd: 2, #81, Boston Red Sox | Grand Street Campus (NY) HS
Poor Avg Great

Stats

W L ERA G GS SV IP SO WHIP
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
2019 12 1-0 4.35 10.1 9 2.03
2 Seasons 29 1-0 5.33 25.1 24 1.82

Statcast Statistics

Season Pitches Batted Balls Barrels Barrel % Exit Velocity Launch Angle Sweet Spot % XBA XSLG WOBA XWOBA XWOBACON Hard Hit % K % BB % ERA xERA
2018 288 48 4 8.3 90.6 12.4 45.8 .335 .571 .353 .421 .508 47.9 21.1 11.3 6.00 8.02
2019 192 30 5 16.7 90.9 9 36.7 .310 .598 .420 .435 .488 53.3 18.8 18.8 4.35 9.11
ALL 480 78 9 11.5 90.7 11.1 42.3 .326 .582 .380 .427 .501 50.0 20.2 14.3
MLB 43640 6.4 88.3 11.9 32.8 .250 .414 .317 .321 .376 34.9 21.8 8.3

Statcast Pitch Arsenal

Jerez relies on 3 pitches.
4-Seam Fastball
(55.2%) ,
Slider
(32.8%) ,
Changeup
(12%) ,


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+ If Available Pitches Click to Video.


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Pitch Tracking

Year Pitch Type # # RHB # LHB % MPH PA AB H 1B 2B 3B HR SO BBE BA XBA SLG XSLG WOBA XWOBA EV LA Spin Whiff% PutAway%
2019 4-Seam Fastball 106 64 42 55.2 94.1 28 21 10 7 1 1 1 1 20 .476 .432 .762 .775 .557 .550 94.5 9 2119 9.4 5.9
2019 Slider 63 23 40 32.8 87.1 13 13 1 0 1 0 0 6 7 .077 .155 .154 .249 .094 .168 86.8 16 2065 30.4 31.6
2019 Changeup 23 21 2 12.0 86.3 7 5 1 0 0 0 1 2 3 .200 .207 .800 .767 .474 .470 76.7 -9 1066 45.5 20.0
2018 4-Seam Fastball 176 113 63 61.1 95.3 45 38 14 9 2 0 3 7 31 .368 .407 .658 .704 .474 .507 92.0 18 2196 16.2 17.9
2018 Slider 58 25 33 20.1 87.5 11 10 2 1 1 0 0 2 8 .200 .314 .300 .623 .256 .423 88.2 10 2024 40.0 12.5
2018 Changeup 54 44 10 18.8 87.3 15 15 1 1 0 0 0 6 9 .067 .167 .067 .202 .059 .163 87.6 -5 1189 48.1 24.0


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
2019 Changeup PIT L 23 86.3 32.7 2.4 8 9.4 -4.6 -33
2019 4-Seamer PIT L 106 94.1 18.2 -2.3 -15 9.4 1.3 17
2019 Slider PIT L 63 87.1 31.3 -2.5 -7 1.9 -2.2 -53
2018 4-Seamer LAA L 176 95.3 16.3 -0.9 -6 11.6 3.4 41
2018 Changeup LAA L 54 87.3 29.3 -2.1 -7 12 -2.2 -16
2018 Slider LAA L 58 87.5 31.4 -2.3 -7 0.8 -3.5 -82
! 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 %
2019 Changeup 2.4 1 23 12.0 7 .200 .800 .486 45.5 28.6 20.0 .207 .767 .473 33.3
2019 Slider -4.5 -3 63 32.8 13 .077 .154 .096 30.4 46.2 31.6 .155 .249 .168 28.6
2019 4-Seamer 3.1 3 106 55.2 28 .476 .762 .573 9.4 3.6 5.9 .432 .775 .552 65.0
2018 Slider 2.9 2 58 20.1 11 .200 .300 .259 40.0 18.2 12.5 .314 .623 .424 62.5
2018 Changeup 1.1 1 54 18.8 15 .067 .067 .180 48.1 40.0 24.0 .167 .202 .163 44.4
2018 4-Seamer 2.5 4 176 61.1 45 .368 .658 .478 16.2 15.6 17.9 .407 .704 .509 45.2
! Note: Years are in reverse order.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2018 71 288 6 -3 2 1 7
2019 48 192 0 -2 2 1 1
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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 40.6 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
ALL 480 43.8 69.0 82.8 25.2 60.3 44.4 57.1 44.4 24.4 6.7 78.1
MLB 48.4 66.1 82.8 28.2 59.4 42.6 60.6 46.6 24.5 7.2 75.1

Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel %
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
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
ALL 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
MLB 45.3 22.0 25.7 7.1 36.6 38.0 25.5 3.2 33.6 24.3 24.6 5.6 6.4

Percentile Rankings

Year xwOBA xBA xSLG xISO xOBP Brl Brl% EV HardHit% K% BB% Whiff% xERA FB Velo FB Spin CB Spin
2018 83 40
2019
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Expected Home Runs

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2019 23.6 2 3.0 -1.0 2 1 2 100.0

Expected Home Runs by Park

Year HR
2019 2 4 4 3 4 3 3 3 3 3 3 3 2 2 3 3 2 3 3 3 2 3 3 3 3 4 3 3 3 2 3
! Note: This tells how many of this player's home runs would have been out of other stadiums. This accounts for different wall heights and distances, but does not attempt to adjust for environmental effects. For these purposes, the 2020 Blue Jays home field was still Rogers Centre, not Sahlen Field.
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Year to Year Changes

Metric 2015 2016 +/-   2017 +/-   2018 +/-   2019 +/-   2020 +/-  
Fastball Velocity 95.3 -1.2 undefined
Offspeed Velocity 87.3 -1 undefined
Breaking Velocity 87.5 -0.4 undefined
Exit Velocity 90.6 0.3 undefined
Launch Angle 12.4 -3.4 undefined
Barrel % 8.3 8.4 undefined
Hard Hit % 47.9 5.4 undefined
Sweet Spot % 45.8 -9.1 undefined
xBA .335 -0.025 undefined
BA .27 0.038 undefined
xwOBA .421 0.014 undefined
wOBA .353 0.067 undefined
xSLG .571 0.027 undefined
SLG .46 0.104 undefined
K% 21.1 -2.3 undefined
BB% 11.3 7.5 undefined
Swing % 43.8 1.5 undefined
Whiff% 27.8 -8.3 undefined
In Zone Swing % 43.8 0 undefined
Out of Zone Swing % 56.3 0 undefined
First Pitch Swing % 29.6 5.8 undefined
First Pitch Strike % 59.2 -5 undefined
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Statcast Shift Statistics

vs RHHvs LHH
YearPAwOBAPAShifts%PAShifts%
2018 71 .353 44 0 0.0 27 0 0.0
2019 48 .420 29 5 17.2 19 7 36.8

Pitch Distribution