Danny Duffy
P | Bats/Throws: L/L | 6' 3" 205LBS | Age: 35
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
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 26 2360 424 19 4.5 3.2 88.8 112.4 15.1 31.1 .254 .398 .328 .329 .357 32.5 17.3 9.0 4.08 4.55
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 .362 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 .451 .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 .467 .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 .330 .394 36.0 23.6 9.1 4.95 4.67
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 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

Duffy relies on 5 pitches.
Four Seamer
(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 44.4 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
2021 Curveball KC L 109 77.3 62.1 5.9 7.4GLV -2.6 -15.9 7.2 7.4GLV -0.5
2021 4-Seam Fastball KC L 432 93.7 11.9 2.9 5.2ARM -2.0 19.3 3.2 5.2ARM -2.4
2021 Slider KC L 184 83.4 42.6 4.4 6.4GLV 0.6 -3.4 5.0 6.4GLV 1.6
2021 Sinker KC L 129 93.6 15.0 -5.9 12.3ARM -2.3 16.3 -6.8 12.3ARM -2.4
2021 Changeup KC L 155 85.2 25.1 -5.7 15.4ARM 1.6 12.7 -4.9 15.4ARM 1.5
2020 4-Seam Fastball KC L 369 92.2 13.9 2.0 6.0ARM -1.0 18.2 2.2 6.0ARM -1.5
2020 Sinker KC L 135 92.1 17.4 -4.7 12.4ARM -2.1 14.6 -5.9 12.4ARM -2.1
2020 Curveball KC L 133 75.5 61.1 2.1 7.9GLV -2.9 -13.1 4.3 7.9GLV -0.3
2020 Changeup KC L 144 83.9 27.7 -4.5 14.3ARM 1.1 11.1 -3.3 14.3ARM 0.7
2020 Slider KC L 162 82.6 41.1 1.3 4.8GLV -1.2 -1.2 2.5 4.8GLV -0.3
! 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 %
2021 4-Seam Fastball 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 .451 .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-Seam Fastball 0.9 3 369 39.1 109 .231 .429 .353 21.5 23.9 23.0 .240 .461 .344 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 .283 .362 .281 37.5
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

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
! Note: Years are in reverse order.
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! Note: This table is showing data from the PITCHER perspective.
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Pitcher Arm Angle

! Note: Data is available from 2020 through the present.
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Statcast Pitching Run Value

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 20.0 8.5 76.1
2016 2,707 54.3 69.4 78.1 30.4 56.6 41.4 62.2 51.5 27.3 8.8 80.8
2017 2,277 55.1 69.9 81.9 26.9 53.3 44.1 64.9 50.5 24.7 8.8 82.0
2018 2,785 49.5 67.1 81.9 25.8 61.9 42.6 58.2 46.1 23.4 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 24.5 8.5 77.9
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 21 32 39 45 16 35 64 27 53 29 22 26 19 73 58 46 93
2016 53 64 33 16 81 6 12 24 35 80 85 80 69 85 47 33 93
2017 55 48 47 50 68 26 58 55 67 46 77 52 42 50 41 89
2018 12 17 13 15 15 10 32 41 33 39 21 39 25 52 56 36 90
2019 20 29 20 17 31 23 39 31 39 32 46 40 13 34 46 26 88
2020 36 40 31 27 45 13 44 43 56 51 44 42 36 34 30 20 90
2021 45 39 39 40 52 76 66 33 33 64 43 71 77 52 59 53 86
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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 23.0 27 31.9 -5 10 24 17 63.0
2017 23.5 13 15.3 -2 6 13 7 53.8
2018 23.1 23 26.4 -3 10 16 15 65.2
2019 24.0 21 24.6 -4 10 11 15 71.4
2020 25.6 10 10.4 0 5 6 6 60.0
2021 23.1 6 7.8 -2 1 3 5 83.3
Player 23.6 100 116.3 -16 42 73 65 65.0
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
2016 27 34 29 33 32 27 36 32 26 21 30 34 33 29 28 34 20 27 34 37 33 30 46 42 30 28 28 42 40 34 27
2017 13 13 14 13 16 14 20 13 12 12 14 20 17 17 13 18 13 11 17 15 16 12 21 18 14 13 15 21 18 17 11
2018 23 33 25 27 27 22 28 24 27 20 24 32 27 22 23 27 22 22 28 35 25 31 34 27 20 21 26 31 31 27 24
2019 21 29 23 21 26 26 26 24 22 18 25 25 27 23 25 22 22 21 25 25 26 26 30 28 21 22 24 27 29 26 23
2020 10 13 12 11 10 10 12 9 10 8 7 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 7 8 8 9 8 8 8 8 7 9 8 8 9
Player 100 130 111 112 119 107 130 109 102 87 107 129 123 109 109 118 96 100 123 132 118 122 151 133 101 100 110 140 138 122 102
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 +/-   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 ↑
LA 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 ↓ .330 -0.011 ↓ .315 -0.015 ↓
wOBA .328 .305 -0.023 ↓ .306 0.001 ↑ .333 0.027 ↑ .323 -0.010 ↓ .324 0.001 ↑ .284 -0.040 ↓
xSLG .398 .428 0.030 ↑ .405 -0.023 ↓ .451 0.046 ↑ .467 0.016 ↑ .441 -0.026 ↓ .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% 20.0 27.3 7.3 ↑ 24.7 -2.6 ↓ 23.4 -1.3 ↓ 24.1 0.7 ↑ 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 6 5.4
2017 Shifts 609 .306 502 17 3.4 107 8 7.5
2018 Shifts 691 .333 569 97 17.0 122 35 28.7
2019 Shifts 555 .323 425 42 9.9 130 31 23.8
2020 Shifts 242 .324 208 46 22.1 34 19 55.9
2021 Shifts 251 .284 202 51 25.2 49 15 30.6
! 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 %
2011 558 16.4 30.3% 1.6% 329 22.0 0.3% 9.7%
2012 153 16.6 22.2% 0.7% 99 21.9 3.0% 8.1%
2013 117 18.6 6.0% 0.9% 90 23.2 1.1% 12.2%
2014 749 19.0 9.3% 2.5% 337 23.4 1.2% 12.2%
2015 652 18.3 20.6% 2.6% 428 24.3 3.0% 20.8%
2016 791 20.1 10.7% 5.9% 375 23.1 4.5% 13.1%
2017 658 19.2 2.9% 2.0% 325 22.3 0.0% 6.8%
2018 813 16.4 27.6% 0.7% 486 19.5 3.7% 2.9%
2019 615 18.6 8.5% 1.3% 356 22.9 0.0% 5.9%
2020 293 18.7 7.2% 1.0% 142 23.4 0.0% 8.5%
2021 301 20.5 1.0% 3.3% 153 23.6 0.0% 9.8%

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Pitch Distribution

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