Kenley Jansen
P | Bats/Throws: S/R | 6' 5" 265LBS | Age: 36
W L ERA G GS SV IP SO WHIP
2022 5 2 3.38 65 0 41 64 85 1.05
2023 3 6 3.63 51 0 29 44.2 52 1.28
2024 3 1 2.16 32 0 19 33.1 38 1.08
15 Seasons 48 35 2.51 849 0 439 847 1,197 0.96
G W-L ERA IP SO WHIP
2022 65 5-2 3.38 64 85 1.05
2023 51 3-6 3.63 44.2 52 1.28
2024 32 3-1 2.16 33.1 38 1.08
15 Seasons 849 48-35 2.51 847 1,197 0.96
MLB Percentile Rankings
Pitch Distribution

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 27 795 110 9 8.2 4.5 86.9 113.5 22.8 25.5 .155 .285 .225 .213 .327 29.1 40.0 4.0 2.41 1.87
2016 28 1002 134 7 5.2 2.8 86.4 110.0 22.7 28.4 .143 .238 .192 .189 .297 24.6 41.4 4.4 1.83 1.51
2017 29 1012 139 6 4.3 2.3 84.2 111.9 17.1 32.4 .170 .265 .207 .203 .332 23.4 42.4 2.7 1.32 1.76
2018 30 1141 188 14 7.4 4.8 84.3 109.7 19.0 33.5 .202 .348 .273 .264 .340 24.6 28.4 5.9 3.01 2.90
2019 31 1068 163 10 6.1 3.8 86.3 114.1 19.4 33.1 .205 .341 .277 .262 .340 26.1 30.4 6.1 3.71 2.97
2020 32 446 57 2 3.5 2.0 82.7 108.2 22.2 33.3 .192 .290 .279 .266 .330 14.0 32.4 8.8 3.33 2.95
2021 33 1071 153 7 4.6 2.5 84.0 106.0 19.8 30.1 .180 .271 .229 .260 .310 26.1 30.9 12.9 2.22 2.81
2022 34 1006 151 11 7.3 4.2 87.1 117.2 21.9 29.8 .169 .292 .265 .239 .310 32.5 32.7 8.5 3.38 2.34
2023 35 721 117 8 6.8 4.3 89.8 111.9 28.6 29.9 .203 .341 .303 .275 .333 35.9 27.7 9.0 3.63 3.14
2024 36 488 81 8 9.9 6.0 90.5 114.6 22.2 34.6 .216 .333 .236 .283 .350 39.5 28.6 9.8 2.16 3.19
Player 8750 1293 82 6.3 3.7 86.1 117.2 21.2 31.0 .181 .299 .247 .243 .326 27.6 33.7 7.0
MLB 7.0 4.8 88.5 122.4 12.3 33.1 .245 .406 .316 .315 .369 36.4 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Jansen relies on 3 pitches.
Cutter
(89.5%) ,
Sinker
(5.7%) ,
Slider
(4.7%) ,


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+ If Available Pitches Click to Video.


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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 36.4 26.4 20.0 17.3 34.5 30.9 34.5 5.5 20.9 41.8 20.0 1.8 8.2 4.5
2016 32.8 34.3 20.1 12.7 32.1 34.3 33.6 4.5 21.6 40.3 19.4 6.0 5.2 2.8
2017 38.8 20.1 24.5 16.5 33.8 37.4 28.8 10.1 25.2 30.9 23.7 4.3 4.3 2.3
2018 36.2 27.1 23.4 13.3 39.9 37.8 21.8 6.4 27.7 31.4 21.3 4.8 7.4 4.8
2019 36.2 25.8 27.0 11.0 39.9 33.7 26.4 4.9 25.2 34.4 24.5 1.8 6.1 3.8
2020 26.3 28.1 31.6 14.0 40.4 35.1 24.6 1.8 21.1 42.1 26.3 1.8 3.5 2.0
2021 37.9 30.1 19.0 13.1 33.3 39.2 27.5 12.4 26.1 29.4 22.9 4.6 4.6 2.5
2022 30.5 39.1 18.5 11.9 41.1 30.5 28.5 6.0 21.2 39.1 21.2 5.3 7.3 4.2
2023 21.4 37.6 23.1 17.9 33.3 35.0 31.6 3.4 16.2 43.6 22.2 7.7 6.8 4.3
2024 32.1 33.3 23.5 11.1 34.6 37.0 28.4 1.2 22.2 39.5 21.0 6.2 9.9 6.0
Player 33.6 30.0 22.6 13.8 36.4 35.2 28.3 6.2 23.3 36.3 22.1 4.5 6.3 3.7
MLB 44.5 23.6 24.8 7.0 37.1 37.5 25.3 3.9 32.7 24.8 24.4 5.8 7.0 4.8
! Note: All figures in this table cover the period 2015-present.

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
2024 Slider BOS R 23 83.1 43.5 4.9 13 6.7 1.3 24
2024 Sinker BOS R 28 94.0 11.2 -9.2 -45 6.6 -7.6 -53
2024 Cutter BOS R 437 92.1 15.0 7.5 33 6.4 3.4 118
2023 Sinker BOS R 66 95.3 12.6 -7.2 -36 10.4 -4.3 -29
2023 Cutter BOS R 569 94.3 12.8 6.7 34 1.6 -0.7 -32
2023 Slider BOS R 86 84.1 42.3 4.7 13 7.2 2.1 42
2022 Slider ATL R 132 81.2 47.4 6.6 16 4.6 -0.4 -8
2022 Cutter ATL R 649 92.2 15.7 4.8 23 8.3 3.7 81
2022 Sinker ATL R 219 93.6 11.8 -7.9 -40 4.6 -9.2 -67
2021 Cutter LAD R 621 92.5 14.6 4.5 24 7.3 3.1 72
2021 Slider LAD R 165 82.0 46.8 6.7 17 6.0 0.7 14
2021 Sinker LAD R 277 93.9 11.9 -6.7 -36 6.9 -6.2 -47
2020 Sinker LAD R 124 92.3 14.0 -5.7 -29 7.0 -6.1 -47
2020 Slider LAD R 42 81.6 45.5 4.1 10 6.9 0.7 11
2020 Cutter LAD R 265 90.9 19.6 2.9 13 7.9 3.2 66
2019 Sinker LAD R 141 93.2 13.3 -5.9 -31 8.4 -4.7 -36
2019 Cutter LAD R 779 91.7 17.0 2.2 11 6.9 3.0 76
2019 Slider LAD R 129 81.8 43.8 4.3 11 6.3 0.8 15
2018 Sinker LAD R 117 93.7 13.1 -6.0 -32 8.7 -4.8 -35
2018 Slider LAD R 66 82.7 43.4 4.5 12 6.1 1.1 22
2018 Cutter LAD R 956 92.1 16.8 2.4 13 6.9 2.9 74
2017 Sinker LAD R 66 94.8 9.3 -7.7 -45 6.8 -7.3 -52
2017 Slider LAD R 79 83.3 39.3 3.2 9 7.2 2.8 63
2017 Cutter LAD R 851 93.2 12.6 2.9 19 7.1 3.0 73
2016 Slider LAD R 62 83.6 43.7 6.2 16 6.7 1.4 26
2016 Cutter LAD R 815 94.0 15.4 1.5 9 4.8 0.7 19
2016 4-Seam Fastball LAD R 115 95.3 14.2 0.3 2 3.2 -2.9 -47
2015 4-Seam Fastball LAD R 70 93.6 16.7 -1.3 -8 4.3 -2.0 -31
2015 Cutter LAD R 636 93.1 17.4 1.7 9 5.0 1.3 34
2015 Slider LAD R 83 83.5 43.3 5.1 13 7.9 2.5 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 %
2024 Cutter 1.7 8 437 89.5 115 .210 .260 .260 25.8 26.1 24.2 .218 .348 .293 41.1
2024 Sinker 3.0 1 28 5.7 10 .200 .200 .180 35.0 60.0 30.0 .236 .271 .222 25.0
2024 Slider 4.5 1 23 4.7 6 .000 .000 .117 0.0 16.7 7.7 .184 .237 .266 25.0
2023 Cutter 0.8 4 569 78.9 148 .237 .356 .295 27.5 28.4 26.3 .205 .333 .269 36.6
2023 Slider -0.6 0 86 11.9 21 .250 .450 .317 37.5 19.0 10.3 .199 .326 .247 31.3
2023 Sinker -2.3 -2 66 9.2 17 .214 .500 .368 31.8 35.3 19.4 .194 .441 .341 37.5
2022 Cutter 1.6 11 654 65.0 158 .170 .262 .233 28.4 32.9 29.2 .157 .240 .224 30.8
2022 Sinker -1.0 -2 220 21.9 64 .237 .525 .348 25.0 37.5 26.4 .194 .397 .284 42.9
2022 Slider -0.7 -1 132 13.1 35 .206 .382 .289 25.0 25.7 17.3 .174 .327 .229 24.0
2021 Cutter 1.9 12 626 58.5 156 .172 .242 .267 31.5 23.7 24.3 .209 .325 .311 24.5
2021 Sinker 1.9 5 280 26.1 73 .154 .231 .225 33.3 39.7 30.5 .163 .226 .227 27.8
2021 Slider 1.3 2 165 15.4 45 .093 .209 .151 40.3 44.4 28.2 .117 .176 .150 30.4
2020 Cutter 1.2 3 276 61.9 54 .213 .362 .310 27.0 20.4 12.6 .218 .371 .309 13.9
2020 Sinker 0.5 1 127 28.5 33 .267 .333 .313 35.8 42.4 31.8 .197 .244 .240 18.8
2020 Slider 3.6 2 43 9.6 15 .077 .077 .153 40.0 53.3 33.3 .088 .105 .168 0.0
2019 Cutter 0.2 1 779 72.9 194 .232 .429 .329 30.4 28.9 21.6 .214 .378 .280 30.1
2019 Sinker 1.9 3 141 13.2 28 .174 .217 .305 40.9 46.4 28.9 .194 .214 .248 9.1
2019 Slider 2.3 3 129 12.1 36 .143 .229 .175 33.3 22.2 12.9 .183 .271 .206 14.8
2018 Cutter 1.5 14 957 83.9 236 .192 .397 .286 27.2 26.7 21.1 .202 .358 .271 24.2
2018 Sinker 0.6 1 117 10.3 31 .207 .310 .282 30.2 32.3 23.8 .188 .329 .257 21.1
2018 Slider -2.2 -1 66 5.8 20 .250 .300 .288 37.9 45.0 18.0 .221 .257 .211 36.4
2017 Cutter 2.2 19 851 84.1 205 .194 .306 .245 34.9 38.0 29.2 .181 .290 .222 22.9
2017 Slider 3.7 3 79 7.8 31 .065 .065 .058 56.4 64.5 35.7 .096 .109 .089 27.3
2017 Sinker 0.2 0 66 6.5 18 .222 .278 .219 25.0 55.6 29.4 .188 .275 .199 25.0
! 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
2024 Cutter 431 92.1 79 18.0 11:45 11:15 30
2024 Sinker 26 94.0 97 20.5 12:15 12:45 -30
2024 Slider 23 83.1 43 9.4 8:30 7:45 45
2023 Cutter 558 94.3 79 17.8 12:15 11:45 30
2023 Sinker 63 95.3 98 20.3 12:45 1:00 -15
2023 Slider 86 84.1 49 9.6 8:45 7:45 60
2022 Cutter 652 92.2 80 18.1 11:30 11:00 30
2022 Sinker 218 93.6 96 19.5 12:00 12:30 -30
2022 Slider 132 81.2 52 9.6 7:45 7:00 45
2021 Cutter 618 92.5 78 18.5 11:30 11:15 15
2021 Sinker 276 93.9 94 19.9 12:00 12:45 -45
2021 Slider 162 82.0 48 10.6 8:00 7:15 45
2020 Cutter 264 90.9 71 15.3 11:15 10:45 30
2020 Sinker 117 92.4 87 18.9 12:00 12:45 -45
2020 Slider 40 81.7 50 9.8 8:30 7:45 45
! 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
2010 107 478 11 5 -3 -3 11
2011 218 979 12 10 -4 -3 14
2012 251 1,047 11 9 -4 -2 15
2013 311 1,329 21 8 -2 -4 23
2014 263 1,054 10 6 -3 -2 11
2015 213 851 10 8 -3 -1 14
2016 294 1,168 17 15 -3 -2 27
2017 317 1,225 14 17 -1 -2 28
2018 325 1,285 9 20 -7 -4 17
2019 263 1,064 4 12 -3 -4 8
2020 131 565 5 5 -4 -1 5
2021 298 1,171 20 18 -11 -5 23
2022 264 1,030 6 7 -5 -1 7
2023 186 721 6 3 -4 -3 2
2024 131 488 7 5 -1 -1 9
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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 795 57.7 73.0 73.7 32.7 47.3 44.4 69.5 56.0 32.6 11.2 80.9
2016 1,002 57.9 74.1 71.9 31.8 48.5 44.3 68.5 56.3 33.5 9.4 79.8
2017 1,012 56.7 69.2 68.5 36.9 51.6 43.6 73.2 54.9 35.8 9.3 79.6
2018 1,141 52.4 71.9 74.1 30.0 63.8 43.5 65.6 52.0 28.0 7.4 84.5
2019 1,068 50.5 70.6 73.5 35.8 54.8 42.2 68.1 53.6 32.2 7.4 76.9
2020 446 50.4 70.7 71.7 34.4 63.2 45.1 66.7 52.7 30.6 7.6 73.5
2021 1,071 52.4 69.3 70.4 29.0 54.7 41.5 62.8 50.1 33.1 8.4 77.8
2022 1,006 55.8 67.6 76.8 29.2 56.9 45.0 68.7 50.6 27.3 9.3 76.6
2023 721 53.5 70.2 76.0 31.3 57.1 42.2 65.8 52.1 29.0 9.0 83.1
2024 488 59.0 66.7 80.2 24.5 40.8 46.3 67.4 49.4 25.7 9.4 76.1
Player 8,750 54.5 70.5 73.3 31.8 54.6 43.6 67.6 52.9 31.2 8.8 79.3
MLB 48.6 67.0 82.0 28.4 57.9 42.6 61.0 47.2 24.8 7.3 76.2
! 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 63 99 99
2016 100 100 99 96 100 87 66 91 98 99 95 97 81 84 98 99
2017 100 99 99 96 100 88 80 99 99 100 99 98 99 77 87 99
2018 92 88 79 52 97 56 30 100 99 83 86 71 74 63 82 100
2019 93 87 88 81 93 74 67 96 99 87 78 88 98 48 68 100
2020 88 87 93 90 74 88 91 99 100 89 47 76 93 35 43 99
2021 93 96 97 96 72 92 92 99 99 89 8 90 60 57 76 99
2022 97 98 93 72 97 72 48 80 89 93 40 62 48 46 51 95
2023 73 56 90
2024 79 81 85 85 67 61 14 11 43 86 27 54 14
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Expected Home Runs

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %

Expected Home Runs by Park

Year HR

Year to Year Changes

Metric 2015 2016 +/-   2017 +/-   2018 +/-   2019 +/-   2020 +/-   2021 +/-   2022 +/-   2023 +/-   2024 +/-  
Fastball Velocity 93.1 94.2 1.1 93.4 -0.8 92.3 -1.1 91.9 -0.4 91.3 -0.6 92.9 1.6 92.6 -0.3 94.4 1.8 92.3 -2.1
Offspeed Velocity 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Breaking Velocity 83.5 83.6 0.1 83.3 -0.3 82.7 -0.6 81.8 -0.9 81.6 -0.2 82.0 0.4 81.2 -0.8 84.1 2.9 83.1 -1.0
Exit Velocity 86.9 86.4 -0.5 84.2 -2.2 84.3 0.1 86.3 2.0 82.7 -3.6 84.0 1.3 87.1 3.1 89.8 2.7 90.5 0.7
Launch Angle 22.8 22.7 -0.1 17.1 -5.6 19.0 1.9 19.4 0.4 22.2 2.8 19.8 -2.4 21.9 2.1 28.6 6.7 22.2 -6.4
Barrel % 8.2 5.2 -3.0 4.3 -0.9 7.4 3.1 6.1 -1.3 3.5 -2.6 4.6 1.1 7.3 2.7 6.8 -0.5 9.9 3.1
Hard Hit % 29.1 24.6 -4.5 23.4 -1.2 24.6 1.2 26.1 1.5 14.0 -12.1 26.1 12.1 32.5 6.4 35.9 3.4 39.5 3.6
LA Sweet-Spot % 25.5 28.4 2.9 32.4 4.0 33.5 1.1 33.1 -0.4 33.3 0.2 30.1 -3.2 29.8 -0.3 29.9 0.1 34.6 4.7
xBA .155 .143 -0.012 .170 0.027 .202 0.032 .205 0.003 .192 -0.013 .180 -0.012 .169 -0.011 .203 0.034 .216 0.013
BA .176 .150 -0.026 .177 0.027 .201 0.024 .212 0.011 .211 -0.001 .153 -0.058 .192 0.039 .237 0.045 .198 -0.039
xwOBA .213 .189 -0.024 .203 0.014 .264 0.061 .262 -0.002 .266 0.004 .260 -0.006 .239 -0.021 .275 0.036 .283 0.008
wOBA .225 .192 -0.033 .207 0.015 .273 0.066 .277 0.004 .279 0.002 .229 -0.050 .265 0.036 .303 0.038 .236 -0.067
xSLG .285 .238 -0.047 .265 0.027 .348 0.083 .341 -0.007 .290 -0.051 .271 -0.019 .292 0.021 .341 0.049 .333 -0.008
SLG .298 .252 -0.046 .270 0.018 .383 0.113 .383 0.000 .311 -0.072 .233 -0.078 .346 0.113 .379 0.033 .241 -0.138
K% 40.0 41.4 1.4 42.4 1.0 28.4 -14.0 30.4 2.0 32.4 2.0 30.9 -1.5 32.7 1.8 27.7 -5.0 28.6 0.9
BB% 4.0 4.4 0.4 2.7 -1.7 5.9 3.2 6.1 0.2 8.8 2.7 12.9 4.1 8.5 -4.4 9.0 0.5 9.8 0.8
Swing % 56.0 56.3 0.3 54.9 -1.4 52.0 -2.9 53.6 1.6 52.7 -0.9 50.1 -2.6 50.6 0.5 52.1 1.5 49.4 -2.7
Whiff% 32.6 33.5 0.9 35.8 2.3 28.0 -7.8 32.2 4.2 30.6 -1.6 33.1 2.5 27.3 -5.8 29.0 1.7 25.7 -3.3
In Zone % 57.7 57.9 0.2 56.7 -1.2 52.4 -4.3 50.5 -1.9 50.4 -0.1 52.4 2.0 55.8 3.4 53.5 -2.3 59.0 5.5
Out of Zone % 42.3 42.1 -0.2 43.3 1.2 47.6 4.3 49.5 1.9 49.6 0.1 47.6 -2.0 44.2 -3.4 46.5 2.3 41.0 -5.5
Out of Zone Swing % 32.7 31.8 -0.9 36.9 5.1 30.0 -6.9 35.8 5.8 34.4 -1.4 29.0 -5.4 29.2 0.2 31.3 2.1 24.5 -6.8
First Pitch Swing % 33.5 36.7 3.2 34.2 -2.5 35.1 0.9 34.2 -0.9 31.4 -2.8 31.8 0.4 33.6 1.8 34.2 0.6 37.1 2.9
First Pitch Strike % 69.5 68.5 -1.0 73.2 4.7 65.6 -7.6 68.1 2.5 66.7 -1.4 62.8 -3.9 68.7 5.9 65.8 -2.9 67.4 1.6
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2016 Shifts 245 .195 125 3 2.4 120 25 20.8
2017 Shifts 255 .209 128 3 2.3 127 30 23.6
2018 Shifts 288 .273 156 11 7.1 132 52 39.4
2019 Shifts 263 .277 122 31 25.4 141 96 68.1
2020 Shifts 102 .279 53 16 30.2 49 46 93.9
2021 Shifts 274 .229 139 57 41.0 135 114 84.4
2022 Shifts 257 .265 138 7 5.1 119 50 42.0
2023 Shades 186 .301 98 2 2.0 88 55 62.5
2024 Shades 131 .238 71 5 7.0 60 27 45.0
! 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 Empty