Wei-Yin Chen
P | Bats/Throws: R/L | 6' 0" 200LBS | Age: 38
W L ERA G GS SV IP SO WHIP
2017 2 1 3.82 9 5 0 33 25 1.03
2018 6 12 4.79 26 26 0 133.1 111 1.34
2019 0 1 6.59 45 0 0 68.1 63 1.54
8 Seasons 59 51 4.18 219 170 0 1,064.2 846 1.28
G W-L ERA IP SO WHIP
2017 9 2-1 3.82 33 25 1.03
2018 26 6-12 4.79 133.1 111 1.34
2019 45 0-1 6.59 68.1 63 1.54
8 Seasons 219 59-51 4.18 1,064.2 846 1.28
MLB Percentile Rankings
Pitch Distribution
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Statcast Statistics

Season Age Pitches Batted
Balls		 Barrels Barrel % Barrel/PA Exit
Velocity		 Max EV Launch
Angle		 Sweet
Spot %		 XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2015 29 3010 593 35 5.9 4.4 87.2 113.4 15.1 30.2 .246 .400 .325 .304 .354 31.9 19.3 5.2 3.34 3.80
2016 30 1918 393 33 8.4 6.3 89.7 113.7 13.2 33.8 .282 .487 .335 .346 .412 37.2 19.2 4.6 4.96 5.17
2017 31 493 97 3 3.1 2.3 86.7 107.1 17.4 30.9 .225 .354 .265 .278 .308 28.9 18.9 6.8 3.82 3.27
2018 32 2224 412 22 5.3 3.8 87.6 112.1 17.4 35.0 .227 .368 .318 .288 .325 31.5 19.4 8.2 4.79 3.47
2019 33 1151 221 19 8.6 6.2 89.4 111.9 14.1 40.3 .282 .502 .378 .353 .421 40.7 20.5 5.9 6.58 5.66
Player 8796 1716 112 6.5 4.8 88.1 113.7 15.2 33.5 .253 .423 .329 .314 .367 34.0 19.5 6.0
MLB 6.9 4.7 88.4 122.4 12.2 33.1 .245 .406 .316 .315 .369 36.3 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Chen relies on 5 pitches.
Four Seamer
(48.1%) ,
Slider
(22.7%) ,
Curveball
(22.4%) ,
Changeup
(3.8%) ,
Sinker
(3.0%) ,


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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
2015 42.7 22.4 23.9 11.0 39.8 33.7 25.8 3.5 31.0 27.0 24.3 5.1 5.9 4.4
2016 41.7 24.4 27.7 6.1 37.4 35.4 27.2 2.3 29.5 24.4 25.4 6.6 8.4 6.3
2017 39.2 24.7 23.7 12.4 28.9 41.2 29.9 6.2 22.7 35.1 25.8 4.1 3.1 2.3
2018 38.1 26.0 26.2 9.7 34.7 36.9 26.9 3.9 27.9 32.5 22.8 5.3 5.3 3.8
2019 37.6 26.2 29.9 6.3 34.4 39.8 25.8 1.8 30.3 25.8 23.5 9.0 8.6 6.2
Player 40.5 24.4 26.1 9.0 36.7 36.1 26.6 3.3 29.4 28.0 24.2 5.9 6.5 4.8
MLB 44.6 23.5 24.8 7.0 37.0 37.5 25.3 3.9 32.8 24.7 24.4 5.8 6.9 4.7
! Note: All figures in this table cover the period 2015-present.

Pitch Movement

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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 Slider MIA L 261 85.8 30.6 -4.6 -13 5.4 1.4 33
2019 4-Seam Fastball MIA L 554 91.4 16.3 0.5 3 3.6 -3.3 -48
2019 Changeup MIA L 44 84.0 28.0 -3.1 -10 7.9 -5.4 -41
2019 Curveball MIA L 258 74.1 63.0 0.4 1 7.8 -3.1 -28
2019 Sinker MIA L 34 89.7 20.6 -3.6 -15 12.1 -2.2 -16
2018 4-Seam Fastball MIA L 1,169 91.1 16.0 1.0 6 5.8 -1.3 -18
2018 Slider MIA L 487 84.9 31.6 -4.7 -13 5.1 0.5 12
2018 Curveball MIA L 226 73.3 62.8 -0.7 -1 6.3 -4.4 -41
2018 Changeup MIA L 256 83.0 28.7 -4.0 -12 10.2 -3.2 -24
2018 Sinker MIA L 66 90.6 20.7 -2.9 -12 13.8 -0.6 -4
2017 Sinker MIA L 53 90.0 19.0 -3.7 -16 15.6 1.1 8
2017 Changeup MIA L 65 82.4 28.0 -3.3 -10 11.4 -1.9 -14
2017 Slider MIA L 43 84.2 31.3 -4.6 -13 5.8 1.6 36
2017 4-Seam Fastball MIA L 267 91.0 14.3 1.6 10 7.4 -0.6 -8
2017 Curveball MIA L 64 73.9 61.1 0.9 1 6.6 -4.2 -39
2016 Slider MIA L 307 84.9 32.1 -4.1 -11 3.8 -1.2 -25
2016 Changeup MIA L 210 84.0 28.2 -3.7 -12 13.0 0.4 3
2016 Curveball MIA L 208 75.3 59.9 -0.2 0 6.4 -4.9 -44
2016 Sinker MIA L 314 90.8 19.7 -3.1 -14 15.0 1.1 8
2016 4-Seam Fastball MIA L 835 91.3 15.4 1.9 11 10.1 2.8 38
2015 Changeup BAL L 304 83.4 27.7 -4.5 -14 14.9 2.0 16
2015 Slider BAL L 507 83.8 35.5 -2.6 -7 3.2 -2.0 -39
2015 Sinker BAL L 614 91.3 18.8 -4.2 -18 16.8 2.6 19
2015 4-Seam Fastball BAL L 1,292 92.3 14.8 1.7 10 11.3 4.0 55
2015 Curveball BAL L 245 73.9 62.3 0.6 1 5.7 -4.9 -46
! 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 4-Seam Fastball -1.9 -10 554 48.1 145 .315 .591 .426 14.2 20.0 15.3 .283 .510 .365 42.6
2019 Slider -3.8 -10 261 22.7 89 .337 .628 .419 25.0 19.1 21.5 .310 .564 .375 47.8
2019 Curveball 0.0 0 258 22.4 53 .240 .300 .250 29.1 30.2 29.1 .204 .300 .247 28.6
2019 Changeup 3.7 2 44 3.8 13 .154 .462 .250 13.6 7.7 6.7 .201 .451 .271 25.0
2019 Sinker -9.9 -3 34 3.0 5 1.000 1.500 1.000 25.0 0.0 0.0 .901 1.572 .962 25.0
2018 4-Seam Fastball 0.3 4 1,169 52.6 304 .243 .430 .330 17.9 19.4 16.9 .230 .379 .306 33.3
2018 Slider -0.3 -1 487 21.9 134 .240 .372 .279 20.9 26.1 20.0 .200 .312 .235 29.2
2018 Changeup -2.8 -7 256 11.5 70 .323 .492 .379 24.8 11.4 13.1 .236 .371 .287 25.9
2018 Curveball 0.6 1 226 10.2 35 .242 .273 .256 31.5 22.9 15.7 .284 .417 .328 36.0
2018 Sinker -6.1 -4 66 3.0 19 .353 .882 .561 7.1 0.0 0.0 .246 .539 .370 35.3
2017 4-Seam Fastball 0.3 1 267 54.2 71 .219 .453 .326 17.2 22.5 20.0 .182 .343 .258 30.6
2017 Changeup 3.3 2 65 13.2 17 .063 .063 .094 35.3 23.5 23.5 .136 .167 .165 8.3
2017 Curveball -0.5 0 64 13.0 12 .250 .250 .225 22.7 33.3 19.0 .250 .313 .243 37.5
2017 Sinker -1.4 -1 53 10.8 16 .333 .467 .369 10.3 0.0 0.0 .436 .691 .490 46.7
2017 Slider 2.8 1 43 8.7 16 .143 .143 .200 17.4 6.3 5.6 .264 .288 .299 15.4
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2012 847 3,249 11 13 -14 -10 0
2013 569 2,177 16 7 -16 -6 1
2014 810 3,105 3 15 -9 -6 3
2015 791 3,009 -1 26 -16 -6 4
2016 520 1,918 4 8 -11 -3 -3
2017 132 492 5 2 -2 -2 3
2018 562 2,204 -4 23 -19 -7 -7
2019 305 1,151 -8 -5 -4 -4 -22
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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 %
2015 3,010 52.5 69.6 85.2 30.7 68.8 44.8 68.4 51.1 19.0 8.1 77.9
2016 1,918 52.8 66.8 85.2 28.9 63.4 44.2 64.0 48.9 20.7 7.6 82.9
2017 493 52.3 68.2 83.0 28.1 74.2 43.2 62.9 49.1 19.4 9.7 85.4
2018 2,224 48.1 67.6 83.8 24.9 65.6 45.1 63.4 45.5 20.3 7.5 75.8
2019 1,151 52.9 71.8 86.0 27.5 58.4 43.6 59.7 50.9 20.0 8.7 82.0
Player 8,796 51.5 68.7 84.9 28.2 65.9 44.5 64.8 49.1 19.8 8.0 79.5
MLB 48.6 66.9 82.0 28.4 58.0 42.6 60.9 47.1 24.8 7.3 76.1
! 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
2015 53 46 38 35 71 4 27 76 59 42 86 20 63 39 23 43 24
2016 14 7 6 9 41 16 8 19 24 37 93 29 49 24 11 30 28
2017 20 10 17 43
2018 72 64 63 59 72 33 71 71 80 29 48 17 16 24 22 16 44
2019 12 8 8 9 26 44 22 28 16 30 81 11 30 21 23 23 55
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Expected Home Runs

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2016 21.3 22 21.0 1 18 15 7 31.8
2017 26.6 3 3.4 0 2 0 3 100.0
2018 22.8 19 17.1 2 10 10 9 47.4
2019 23.4 15 15.8 -1 11 16 3 20.0
Player 22.5 59 57.2 2 41 41 22 37.3

Expected Home Runs by Park

Year HR
2016 22 23 18 23 21 17 20 20 17 16 19 25 23 18 19 20 14 18 22 21 22 16 29 31 20 20 20 31 27 23 16
2017 3 3 3 4 3 3 3 3 3 3 3 3 4 3 3 3 3 3 4 3 4 4 5 4 3 3 3 4 5 3 3
2018 19 20 15 18 17 15 18 16 17 14 16 21 20 14 15 20 17 16 18 18 19 17 22 18 14 13 15 17 21 17 14
2019 15 19 13 14 18 18 18 14 14 10 13 19 21 15 17 13 11 11 17 20 18 18 21 17 12 12 15 20 20 16 9
Player 59 65 49 59 59 53 59 53 51 43 51 68 68 50 54 56 45 48 61 62 63 55 77 70 49 48 53 72 73 59 42
! Note: This tells how many of this player's home runs would have been out of other stadiums. This accounts for different wall heights, distances and 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 +/-  
Fastball Velocity 92.0 91.2 -0.8 ↓ 90.8 -0.4 ↓ 91.1 0.3 ↑ 91.3 0.2 ↑
Offspeed Velocity 83.4 84.0 0.6 ↑ 82.4 -1.6 ↓ 83.0 0.6 ↑ 84.0 1.0 ↑
Breaking Velocity 80.5 81.0 0.5 ↑ 78.0 -3.0 ↓ 81.2 3.2 ↑ 80.0 -1.2 ↓
Exit Velocity 87.2 89.7 2.5 ↑ 86.7 -3.0 ↓ 87.6 0.9 ↑ 89.4 1.8 ↑
Launch Angle 15.1 13.2 -1.9 ↓ 17.4 4.2 ↑ 17.4 0.0 14.1 -3.3 ↓
Barrel % 5.9 8.4 2.5 ↑ 3.1 -5.3 ↓ 5.3 2.2 ↑ 8.6 3.3 ↑
Hard Hit % 31.9 37.2 5.3 ↑ 28.9 -8.3 ↓ 31.5 2.6 ↑ 40.7 9.2 ↑
Sweet Spot % 30.2 33.8 3.6 ↑ 30.9 -2.9 ↓ 35.0 4.1 ↑ 40.3 5.3 ↑
xBA .246 .282 0.036 ↑ .225 -0.057 ↓ .227 0.002 ↑ .282 0.055 ↑
BA .262 .276 0.014 ↑ .207 -0.069 ↓ .256 0.049 ↑ .311 0.055 ↑
xwOBA .304 .346 0.042 ↑ .278 -0.068 ↓ .288 0.010 ↑ .353 0.065 ↑
wOBA .325 .335 0.010 ↑ .265 -0.070 ↓ .318 0.053 ↑ .378 0.060 ↑
xSLG .400 .487 0.087 ↑ .354 -0.133 ↓ .368 0.014 ↑ .502 0.134 ↑
SLG .456 .477 0.021 ↑ .347 -0.130 ↓ .432 0.085 ↑ .557 0.125 ↑
K% 19.3 19.2 -0.1 ↓ 18.9 -0.3 ↓ 19.4 0.5 ↑ 20.5 1.1 ↑
BB% 5.2 4.6 -0.6 ↓ 6.8 2.2 ↑ 8.2 1.4 ↑ 5.9 -2.3 ↓
Swing % 51.1 48.9 -2.2 ↓ 49.1 0.2 ↑ 45.5 -3.6 ↓ 50.9 5.4 ↑
Whiff% 19.0 20.7 1.7 ↑ 19.4 -1.3 ↓ 20.3 0.9 ↑ 20.0 -0.3 ↓
In Zone % 52.5 52.8 0.3 ↑ 52.3 -0.5 ↓ 48.1 -4.2 ↓ 52.9 4.8 ↑
Out of Zone % 47.5 47.2 -0.3 ↓ 47.7 0.5 ↑ 51.9 4.2 ↑ 47.1 -4.8 ↓
Out of Zone Swing % 30.7 28.9 -1.8 ↓ 28.1 -0.8 ↓ 24.9 -3.2 ↓ 27.5 2.6 ↑
First Pitch Swing % 31.3 28.8 -2.5 ↓ 28.0 -0.8 ↓ 28.1 0.1 ↑ 31.8 3.7 ↑
First Pitch Strike % 68.4 64.0 -4.4 ↓ 62.9 -1.1 ↓ 63.4 0.5 ↑ 59.7 -3.7 ↓
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2016 Shifts 503 .341 423 0 0.0 80 6 7.5
2017 Shifts 132 .265 96 9 9.4 36 16 44.4
2018 Shifts 566 .318 457 72 15.8 109 41 37.6
2019 Shifts 305 .378 193 59 30.6 112 71 63.4
! 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 %
2012 922 14.8 52.4% 0.4% 464 23.9 0.2% 7.5%
2013 642 15.4 41.3% 0.0% 366 25.2 0.0% 12.6%
2014 936 16.0 33.7% 0.5% 441 24.6 0.0% 10.7%
2015 894 15.7 42.8% 2.0% 446 23.4 2.2% 16.1%
2016 591 15.4 46.0% 1.5% 276 24.3 2.9% 19.6%
2017 173 15.9 39.9% 0.6% 49 25.1 0.0% 16.3%
2018 689 15.3 44.3% 0.7% 381 23.7 0.0% 8.1%
2019 327 17.4 23.9% 0.3% 178 23.0 0.0% 10.7%
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Pitch Distribution

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