Wei-Yin Chen
P | Bats/Throws: R/L | 6' 0" 200LBS | Age: 39
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
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
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 3.82
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 .353 .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 .366 34.0 19.5 6.0
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

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 44.4 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

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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 4-Seam Fastball MIA L 554 91.4 16.3 0.5 3.6ARM -3.4 16.7 1.0 3.6ARM -4.1
2019 Slider MIA L 261 85.8 30.6 -4.6 5.4GLV 1.4 6.7 -5.1 5.4GLV 0.1
2019 Sinker MIA L 34 89.7 20.6 -3.6 12.1ARM -2.2 13.7 -4.2 12.1ARM -2.0
2019 Changeup MIA L 44 84.0 28.0 -3.1 7.9ARM -5.4 11.0 -3.1 7.9ARM -6.4
2019 Curveball MIA L 258 74.1 63.0 0.4 7.8GLV -3.1 -12.0 3.3 7.8GLV -0.3
2018 Curveball MIA L 226 73.3 62.8 -0.7 6.3GLV -4.3 -10.5 1.4 6.3GLV -2.0
2018 Sinker MIA L 66 90.6 20.7 -2.9 13.8ARM -0.6 13.2 -3.7 13.8ARM -0.5
2018 Changeup MIA L 256 83.0 28.7 -4.0 10.2ARM -3.2 11.5 -3.9 10.2ARM -3.9
2018 Slider MIA L 487 84.9 31.6 -4.7 5.1GLV 0.5 6.8 -5.1 5.1GLV -0.3
2018 4-Seam Fastball MIA L 1169 91.1 16.0 1.0 5.8ARM -1.3 17.4 1.8 5.8ARM -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 -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 25.6 19.1 21.5 .310 .564 .375 47.8
2019 Curveball 0.0 0 258 22.4 53 .240 .300 .250 30.1 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 .229 .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 32.9 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
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

Statcast Pitching Run Value

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 20.9 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 20.4 7.5 75.8
2019 1,151 52.9 71.8 86.0 27.5 58.4 43.6 59.7 50.9 20.3 8.7 82.0
Player 8,796 51.5 68.7 84.9 28.2 65.9 44.5 64.8 49.1 19.9 8.0 79.5
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
2015 53 46 38 35 71 4 27 76 59 42 86 17 63 38 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 25 21 16 44
2019 12 8 8 9 26 44 22 28 16 30 81 12 30 22 23 23 56
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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 %
2016 21.3 22 18.8 3 21 12 7 31.8
2017 26.6 3 3.3 0 2 0 3 100.0
2018 22.8 19 16.8 2 10 11 8 42.1
2019 23.4 15 15.6 -1 10 16 3 20.0
Player 22.5 59 54.5 5 43 39 21 35.6
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
2016 22 21 17 20 18 15 17 18 15 14 17 22 21 16 17 17 12 17 19 20 20 16 27 29 16 18 17 28 25 21 14
2017 3 3 3 4 3 3 3 3 3 3 3 3 4 3 3 3 3 3 3 3 4 4 5 3 3 3 3 4 5 3 3
2018 19 20 14 18 16 15 18 16 17 14 16 20 19 14 15 20 17 16 18 18 19 17 21 18 13 13 15 17 20 17 14
2019 15 19 12 14 18 17 18 14 14 10 13 19 20 14 17 13 11 11 17 19 17 18 21 17 12 12 15 20 20 16 9
Player 59 63 46 56 55 50 56 51 49 41 49 64 64 47 52 53 43 47 57 60 60 55 74 67 44 46 50 69 70 57 40
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 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 ↑
LA 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 ↑ .353 -0.134 ↓ .368 0.015 ↑ .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 20.9 1.9 ↑ 19.4 -1.5 ↓ 20.4 1.0 ↑ 20.3 -0.1 ↓
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 0 0.0
2017 Shifts 132 .265 96 7 7.3 36 15 41.7
2018 Shifts 566 .318 457 72 15.8 109 38 34.9
2019 Shifts 305 .378 193 56 29.0 112 65 58.0
! 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 %
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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