Danny Duffy
P | Bats/Throws: L/L | 6' 3" 205LBS | Age: 34
Draft: 2007 | Rd: 3, #96, Kansas City Royals | Cabrillo (CA) HS
W L ERA G GS SV IP SO WHIP
2019 7 6 4.34 23 23 0 130.2 115 1.31
2020 4 4 4.95 12 11 0 56.1 57 1.33
2021 4 3 2.51 13 12 0 61 65 1.21
11 Seasons 68 68 3.95 234 204 1 1,172.1 1,048 1.32
G W-L ERA IP SO WHIP
2019 23 7-6 4.34 130.2 115 1.31
2020 12 4-4 4.95 56.1 57 1.33
2021 13 4-3 2.51 61 65 1.21
11 Seasons 234 68-68 3.95 1,172.1 1,048 1.32
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 26 2360 424 19 4.5 3.2 88.8 112.4 15.1 31.1 .254 .399 .328 .329 .357 32.5 17.3 9.0 4.08 4.52
2016 27 2707 494 39 7.9 5.3 89.5 113.5 15.8 34.8 .237 .428 .305 .308 .389 36.0 25.7 5.7 3.51 3.99
2017 28 2277 434 24 5.5 3.9 87.0 114.6 16.0 32.0 .248 .405 .306 .309 .363 31.1 21.3 6.7 3.81 4.09
2018 29 2785 477 35 7.3 5.1 88.6 115.1 16.8 36.7 .263 .452 .333 .346 .396 37.3 20.4 10.1 4.88 5.19
2019 30 2161 386 29 7.5 5.2 89.3 113.1 16.4 33.4 .260 .468 .323 .341 .393 37.8 20.7 8.3 4.34 5.23
2020 31 943 161 12 7.5 5.0 88.7 112.9 19.6 32.9 .248 .441 .324 .331 .394 36.0 23.6 9.1 4.95 4.70
2021 32 1009 165 11 6.7 4.4 89.5 113.6 17.7 39.4 .246 .415 .284 .315 .391 40.6 25.8 8.7 2.51 4.21
Player 14242 2541 169 6.7 4.6 88.7 115.1 16.4 34.0 .251 .430 .317 .326 .382 35.4 21.7 8.1
MLB 6.9 4.7 88.4 122.4 12.2 33.1 .245 .406 .316 .315 .369 36.3 22.1 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Duffy relies on 5 pitches.
4-Seam Fastball
(42.8%) ,
Slider
(18.2%) ,
Changeup
(15.4%) ,
Sinker
(12.8%) ,
Curveball
(10.8%) ,


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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 40.6 21.9 27.4 10.1 35.4 37.0 27.6 3.5 31.4 24.5 24.3 5.7 4.5 3.2
2016 37.4 32.2 23.1 7.3 34.4 36.6 28.9 2.8 28.3 29.6 23.1 6.3 7.9 5.3
2017 41.0 25.3 24.4 9.2 36.9 36.2 27.0 5.3 27.9 27.0 25.8 6.7 5.5 3.9
2018 36.1 26.8 28.1 9.0 39.4 34.2 26.4 3.1 27.7 28.9 25.8 6.7 7.3 5.1
2019 35.8 27.2 28.0 9.1 37.6 42.5 19.9 4.4 25.9 31.1 24.1 7.0 7.5 5.2
2020 32.3 27.3 26.7 13.7 27.3 41.0 31.7 3.1 25.5 32.3 23.0 6.8 7.5 5.0
2021 33.9 24.2 30.9 10.9 28.5 38.2 33.3 1.8 24.2 30.9 30.9 5.5 6.7 4.4
Player 37.5 26.7 26.4 9.3 35.6 37.4 27.0 3.6 27.8 28.7 24.9 6.4 6.7 4.6
MLB 44.6 23.5 24.9 7.0 37.0 37.6 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
2021 Sinker KC L 129 93.6 15.0 -5.9 -28 12.3 -2.3 -16
2021 4-Seamer KC L 432 93.7 11.9 2.9 19 5.2 -2.0 -27
2021 Curveball KC L 109 77.3 62.1 5.9 11 7.4 -2.6 -26
2021 Slider KC L 184 83.4 42.6 4.4 11 6.4 0.4 7
2021 Changeup KC L 155 85.2 25.1 -5.7 -18 15.4 1.6 12
2020 Sinker KC L 135 92.1 17.4 -4.7 -21 12.4 -2.1 -14
2020 Curveball KC L 133 75.5 61.1 2.1 4 7.9 -3.0 -27
2020 Changeup KC L 144 83.9 27.7 -4.5 -14 14.3 1.1 8
2020 4-Seamer KC L 369 92.2 13.9 2.0 12 6.0 -1.0 -15
2020 Slider KC L 162 82.6 41.1 1.2 3 4.8 -1.3 -21
2019 Sinker KC L 192 92.1 18.0 -4.3 -19 12.8 -1.4 -10
2019 Changeup KC L 249 83.8 27.5 -3.7 -12 14.8 1.3 10
2019 4-Seamer KC L 956 92.3 14.6 1.5 9 7.2 0.0 0
2019 Curveball KC L 195 76.1 63.2 4.3 7 8.6 -2.2 -20
2019 Slider KC L 569 84.0 37.6 0.6 2 3.1 -1.8 -37
2018 Sinker KC L 488 93.3 16.1 -5.1 -24 11.7 -2.6 -18
2018 Changeup KC L 516 83.6 27.5 -4.3 -14 14.9 1.3 10
2018 4-Seamer KC L 1,058 93.0 13.5 2.4 15 7.0 -0.2 -3
2018 Curveball KC L 264 76.2 63.2 5.1 9 8.1 -2.2 -21
2018 Slider KC L 449 83.3 41.2 2.9 8 4.6 -0.5 -9
2017 Curveball KC L 15 73.3 64.8 3.8 6 12.1 1.0 9
2017 Slider KC L 661 83.0 39.9 3.0 8 7.3 2.4 49
2017 Changeup KC L 519 83.7 26.3 -2.9 -10 11.5 -1.7 -13
2017 Sinker KC L 514 93.0 14.1 -5.7 -29 9.6 -4.9 -34
2017 4-Seamer KC L 562 92.8 13.3 1.0 7 2.6 -4.7 -64
2016 Sinker KC L 569 95.3 13.7 -3.9 -22 12.7 -1.1 -8
2016 Slider KC L 1 96.5 9.2 -5.7 -38 5.5 -4.9 810
2016 4-Seamer KC L 1,028 95.5 11.4 1.3 10 6.4 -0.4 -6
2016 Changeup KC L 465 85.8 24.7 -3.0 -11 16.2 3.4 27
2016 Curveball KC L 619 84.1 41.9 -1.5 -3 6.5 -3.3 -34
2015 Sinker KC L 453 94.2 -- -- 11.4 -2.2 -16
2015 4-Seamer KC L 1,008 94.5 -- -- 4.4 -2.4 -35
2015 Cutter KC L 23 89.7 -- -- 1.3 -4.5 -142
2015 Changeup KC L 222 85.6 -- -- 14.2 1.5 12
2015 Curveball KC L 534 81.3 -- -- 7.3 -2.8 -27
! 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 %
2021 4-Seamer 2.1 9 432 42.8 119 .212 .298 .297 26.2 25.2 22.2 .229 .378 .313 35.1
2021 Slider 1.0 2 184 18.2 48 .188 .333 .222 39.3 37.5 26.5 .251 .476 .307 46.7
2021 Changeup 0.9 1 155 15.4 37 .194 .361 .247 37.3 21.6 21.6 .253 .452 .309 28.6
2021 Sinker -1.2 -2 129 12.8 28 .391 .696 .536 14.0 3.6 14.3 .287 .472 .390 63.6
2021 Curveball 0.7 1 109 10.8 19 .263 .316 .255 31.0 42.1 17.8 .257 .325 .254 45.5
2020 4-Seamer 0.9 3 369 39.1 109 .231 .429 .353 21.5 23.9 23.0 .240 .461 .345 42.0
2020 Slider -2.6 -4 162 17.2 50 .188 .354 .248 34.5 28.0 21.5 .194 .327 .240 38.2
2020 Changeup 0.7 1 144 15.3 43 .263 .395 .316 35.7 27.9 26.7 .215 .345 .281 18.5
2020 Sinker -1.1 -2 135 14.3 20 .500 1.000 .645 18.5 5.0 10.0 .485 1.004 .637 33.3
2020 Curveball -0.3 0 133 14.1 20 .250 .300 .243 17.6 20.0 14.8 .285 .363 .283 37.5
2019 4-Seamer -0.4 -4 956 44.2 261 .255 .427 .357 19.5 21.8 20.4 .268 .489 .372 43.0
2019 Slider -0.4 -2 569 26.3 150 .239 .479 .331 30.7 23.3 17.9 .234 .479 .312 36.1
2019 Changeup 0.1 0 249 11.5 68 .231 .446 .304 32.3 19.1 18.3 .237 .387 .280 26.9
2019 Curveball -0.1 0 195 9.0 39 .333 .410 .327 25.7 23.1 12.3 .343 .447 .341 30.0
2019 Sinker 1.6 3 192 8.9 37 .219 .344 .328 13.3 2.7 8.3 .268 .456 .354 41.9
2018 4-Seamer 0.8 8 1,058 38.0 253 .239 .357 .326 21.5 22.9 19.1 .249 .414 .342 38.4
2018 Changeup -0.3 -1 516 18.5 148 .248 .409 .309 29.1 18.2 18.1 .256 .450 .325 27.7
2018 Sinker -0.1 0 488 17.5 112 .341 .549 .441 16.2 11.6 16.9 .324 .550 .431 53.8
2018 Slider -2.9 -13 449 16.1 115 .296 .574 .393 27.5 20.0 16.2 .271 .536 .370 35.3
2018 Curveball -0.5 -1 264 9.5 63 .213 .262 .236 25.0 31.7 16.9 .223 .289 .248 31.7
2017 Slider 0.4 2 661 29.0 159 .243 .318 .269 32.8 25.8 18.6 .226 .329 .264 29.1
2017 4-Seamer -0.7 -4 562 24.7 156 .308 .462 .369 16.2 19.9 21.2 .289 .472 .355 34.2
2017 Changeup 1.1 6 520 22.8 159 .187 .327 .254 31.0 25.8 24.1 .215 .357 .265 23.6
2017 Sinker -0.4 -2 514 22.6 131 .297 .495 .399 15.6 13.0 18.3 .270 .489 .372 39.6
2017 Curveball -4.9 -1 15 0.7 4 .500 1.000 .625 0.0 0.0 0.0 .232 .324 .238 0.0
! 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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Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2021 Changeup 155 85.2 92 19.9 10:15 10:15 0
2021 Curveball 109 77.3 92 20.6 5:30 5:15 15
2021 4-Seam Fastball 429 93.7 97 19.6 11:15 11:30 -15
2021 Sinker 127 93.6 94 20.2 11:15 10:45 30
2021 Slider 180 83.4 40 8.8 4:30 4:15 15
2020 Changeup 130 84.0 92 18.1 10:00 10:00 0
2020 Curveball 125 75.5 91 17.9 5:15 5:00 15
2020 4-Seam Fastball 341 92.2 97 18.8 11:15 11:15 0
2020 Sinker 102 92.1 94 19.3 11:15 10:30 45
2020 Slider 134 82.5 32 6.3 4:15 4:00 15
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! Note: This table is showing data from the PITCHER perspective.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2011 473 1,953 -2 3 -12 -7 -18
2012 120 523 5 -1 -3 -1 0
2013 104 467 6 5 -3 -2 6
2014 622 2,504 19 17 -16 -9 12
2015 611 2,454 12 12 -15 -10 -2
2016 731 2,707 14 17 -14 -5 11
2017 609 2,272 8 13 -14 -6 1
2018 691 2,776 19 9 -24 -12 -8
2019 555 2,161 4 15 -15 -7 -3
2020 242 943 -6 13 -5 -5 -2
2021 251 1,009 4 17 -5 -3 12
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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 2,360 53.7 66.0 83.7 26.4 67.4 42.7 57.0 47.6 19.9 8.5 76.1
2016 2,707 54.3 69.4 78.1 30.4 56.6 41.4 62.2 51.5 27.2 8.8 80.8
2017 2,277 55.1 69.9 81.9 26.9 53.3 44.1 64.9 50.5 24.3 8.8 82.0
2018 2,785 49.5 67.1 81.9 25.8 61.9 42.6 58.2 46.1 23.3 8.5 75.1
2019 2,161 51.4 68.4 82.7 25.6 55.4 41.7 59.8 47.6 24.1 9.1 79.1
2020 943 49.6 66.7 84.6 26.3 48.8 44.0 57.0 46.3 25.6 7.7 79.5
2021 1,009 48.7 67.6 77.7 30.7 55.3 47.1 57.5 48.7 29.1 5.8 64.4
Player 14,242 52.2 68.0 81.5 27.3 58.0 42.9 60.0 48.5 24.4 8.5 77.9
MLB 48.6 67.0 82.0 28.5 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 21 32 39 45 16 35 64 27 53 29 22 26 19 73 57 46 93
2016 53 64 33 16 81 6 12 24 35 80 85 80 69 84 47 33 93
2017 55 48 47 50 68 26 58 55 67 46 77 51 42 50 41 89
2018 12 17 12 15 16 10 32 41 33 39 21 40 25 52 57 36 90
2019 20 29 19 17 31 23 39 31 38 32 46 41 13 34 46 26 88
2020 35 40 31 27 44 13 44 43 56 51 44 43 36 34 30 21 90
2021 45 40 39 40 52 76 66 33 33 64 43 72 77 53 58 54 86
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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 23.0 27 32.2 -5 10 24 17 63.0
2017 23.5 13 16.5 -4 6 14 7 53.8
2018 23.1 23 26.5 -4 10 16 15 65.2
2019 24.0 21 25.6 -5 9 11 16 76.2
2020 25.6 10 10.5 -1 5 6 6 60.0
2021 23.1 6 7.9 -2 1 3 5 83.3
Player 23.6 100 119.1 -19 41 74 66 66.0

Expected Home Runs by Park

Year HR
2016 27 34 29 33 32 27 36 32 26 21 30 34 33 29 29 34 21 27 35 38 35 30 46 42 30 30 28 44 40 34 27
2017 13 14 16 15 18 15 21 15 13 12 15 22 19 18 14 20 14 12 18 16 17 12 22 19 15 14 16 23 19 18 12
2018 23 33 25 27 28 22 28 24 27 20 24 32 27 22 23 27 22 22 28 35 25 31 35 27 20 21 26 31 32 27 24
2019 21 30 24 22 27 27 27 25 23 20 25 26 29 24 26 23 23 22 26 26 27 27 31 29 22 23 25 28 30 27 24
2020 10 13 12 11 10 10 12 9 10 8 8 12 10 10 12 9 11 11 12 12 10 14 12 10 8 8 10 10 12 10 8
2021 6 8 8 7 8 8 8 7 5 8 7 6 9 8 8 8 8 8 8 8 8 9 8 8 8 8 7 9 9 8 9
Player 100 132 114 115 123 109 132 112 104 89 109 132 127 111 112 121 99 102 127 135 122 123 154 135 103 104 112 145 142 124 104
! 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 +/-   2020 +/-   2021 +/-  
Fastball Velocity 94.3 95.4 1.1 ↑ 92.9 -2.5 ↓ 93.1 0.2 ↑ 92.3 -0.8 ↓ 92.2 -0.1 ↓ 93.7 1.5 ↑
Offspeed Velocity 85.6 85.8 0.2 ↑ 83.7 -2.1 ↓ 83.6 -0.1 ↓ 83.8 0.2 ↑ 83.9 0.1 ↑ 85.2 1.3 ↑
Breaking Velocity 81.2 84.0 2.8 ↑ 82.8 -1.2 ↓ 80.7 -2.1 ↓ 82.0 1.3 ↑ 79.4 -2.6 ↓ 81.2 1.8 ↑
Exit Velocity 88.8 89.5 0.7 ↑ 87.0 -2.5 ↓ 88.6 1.6 ↑ 89.3 0.7 ↑ 88.7 -0.6 ↓ 89.5 0.8 ↑
Launch Angle 15.1 15.8 0.7 ↑ 16.0 0.2 ↑ 16.8 0.8 ↑ 16.4 -0.4 ↓ 19.6 3.2 ↑ 17.7 -1.9 ↓
Barrel % 4.5 7.9 3.4 ↑ 5.5 -2.4 ↓ 7.3 1.8 ↑ 7.5 0.2 ↑ 7.5 0.0 6.7 -0.8 ↓
Hard Hit % 32.5 36.0 3.5 ↑ 31.1 -4.9 ↓ 37.3 6.2 ↑ 37.8 0.5 ↑ 36.0 -1.8 ↓ 40.6 4.6 ↑
Sweet Spot % 31.1 34.8 3.7 ↑ 32.0 -2.8 ↓ 36.7 4.7 ↑ 33.4 -3.3 ↓ 32.9 -0.5 ↓ 39.4 6.5 ↑
xBA .254 .237 -0.017 ↓ .248 0.011 ↑ .263 0.015 ↑ .260 -0.003 ↓ .248 -0.012 ↓ .246 -0.002 ↓
BA .264 .241 -0.023 ↓ .257 0.016 ↑ .264 0.007 ↑ .251 -0.013 ↓ .249 -0.002 ↓ .226 -0.023 ↓
xwOBA .329 .308 -0.021 ↓ .309 0.001 ↑ .346 0.037 ↑ .341 -0.005 ↓ .331 -0.010 ↓ .315 -0.016 ↓
wOBA .328 .305 -0.023 ↓ .306 0.001 ↑ .333 0.027 ↑ .323 -0.010 ↓ .324 0.001 ↑ .284 -0.040 ↓
xSLG .399 .428 0.029 ↑ .405 -0.023 ↓ .452 0.047 ↑ .468 0.016 ↑ .441 -0.027 ↓ .415 -0.026 ↓
SLG .405 .419 0.014 ↑ .397 -0.022 ↓ .426 0.029 ↑ .438 0.012 ↑ .437 -0.001 ↓ .357 -0.080 ↓
K% 17.3 25.7 8.4 ↑ 21.3 -4.4 ↓ 20.4 -0.9 ↓ 20.7 0.3 ↑ 23.6 2.9 ↑ 25.8 2.2 ↑
BB% 9.0 5.7 -3.3 ↓ 6.7 1.0 ↑ 10.1 3.4 ↑ 8.3 -1.8 ↓ 9.1 0.8 ↑ 8.7 -0.4 ↓
Swing % 47.6 51.5 3.9 ↑ 50.5 -1.0 ↓ 46.1 -4.4 ↓ 47.6 1.5 ↑ 46.3 -1.3 ↓ 48.7 2.4 ↑
Whiff% 19.9 27.2 7.3 ↑ 24.3 -2.9 ↓ 23.3 -1.0 ↓ 24.1 0.8 ↑ 25.6 1.5 ↑ 29.1 3.5 ↑
In Zone % 53.7 54.3 0.6 ↑ 55.1 0.8 ↑ 49.5 -5.6 ↓ 51.4 1.9 ↑ 49.6 -1.8 ↓ 48.7 -0.9 ↓
Out of Zone % 46.3 45.7 -0.6 ↓ 44.9 -0.8 ↓ 50.5 5.6 ↑ 48.6 -1.9 ↓ 50.4 1.8 ↑ 51.3 0.9 ↑
Out of Zone Swing % 26.4 30.4 4.0 ↑ 26.9 -3.5 ↓ 25.8 -1.1 ↓ 25.6 -0.2 ↓ 26.3 0.7 ↑ 30.7 4.4 ↑
First Pitch Swing % 28.4 34.2 5.8 ↑ 36.5 2.3 ↑ 28.8 -7.7 ↓ 30.3 1.5 ↑ 27.7 -2.6 ↓ 27.4 -0.3 ↓
First Pitch Strike % 57.0 62.2 5.2 ↑ 64.9 2.7 ↑ 58.2 -6.7 ↓ 59.8 1.6 ↑ 57.0 -2.8 ↓ 57.5 0.5 ↑
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2016 Shifts 722 .306 610 3 0.5 112 13 11.6
2017 Shifts 609 .306 502 21 4.2 107 19 17.8
2018 Shifts 691 .333 569 97 17.0 122 40 32.8
2019 Shifts 555 .323 425 55 12.9 130 38 29.2
2020 Shifts 242 .324 208 61 29.3 34 23 67.6
2021 Shifts 251 .284 202 84 41.6 49 18 36.7
! 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