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 4 2 3.48 51 0 26 51.2 59 1.08
15 Seasons 49 36 2.58 868 0 446 865.1 1,218 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 51 4-2 3.48 51.2 59 1.08
15 Seasons 868 49-36 2.58 865.1 1,218 0.96
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		 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 36 756 129 15 11.6 7.2 90.6 114.6 22.5 37.2 .220 .375 .260 .291 .371 37.2 28.5 8.7 3.48 3.46
Player 9018 1341 89 6.6 3.9 86.2 117.2 21.3 31.4 .183 .304 .248 .245 .329 27.8 33.6 7.0
MLB 7.0 4.8 88.5 122.4 12.3 33.2 .245 .406 .316 .315 .369 36.5 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Jansen relies on 3 pitches.
Cutter
(85.3%) ,
Sinker
(7.4%) ,
Slider
(7.3%) ,


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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 30.2 37.2 22.5 10.1 35.7 37.2 27.1 1.6 21.7 40.3 20.2 4.7 11.6 7.2
Player 33.4 30.5 22.5 13.6 36.5 35.3 28.2 6.0 23.2 36.5 22.0 4.4 6.6 3.9
MLB 44.5 23.8 24.7 7.0 37.2 37.5 25.2 3.9 32.7 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: 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 Cutter BOS R 645 92.2 14.8 7.8 34 5.9 3.1 108
2024 Sinker BOS R 56 93.3 11.9 -9.1 -43 6.0 -8.1 -58
2024 Slider BOS R 55 82.4 43.0 3.3 8 7.5 2.2 40
2023 Sinker BOS R 66 95.3 12.6 -7.2 -36 10.4 -4.3 -29
2023 Slider BOS R 86 84.1 42.3 4.7 13 7.2 2.2 43
2023 Cutter BOS R 569 94.3 12.8 6.7 34 1.6 -0.7 -32
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
2022 Slider ATL R 132 81.2 47.4 6.6 16 4.6 -0.4 -8
2021 Cutter LAD R 624 92.5 14.6 4.5 24 7.2 3.0 72
2021 Slider LAD R 165 82.0 46.8 6.7 17 6.0 0.7 14
2021 Sinker LAD R 274 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 Cutter LAD R 265 90.9 19.6 2.9 13 7.9 3.2 66
2020 Slider LAD R 42 81.6 45.5 4.1 10 6.9 0.7 12
2019 Cutter LAD R 779 91.7 17.0 2.2 11 6.9 3.0 76
2019 Sinker LAD R 141 93.2 13.3 -5.9 -31 8.4 -4.7 -36
2019 Slider LAD R 129 81.8 43.8 4.3 11 6.3 0.9 16
2018 Sinker LAD R 117 93.7 13.1 -6.0 -32 8.7 -4.8 -35
2018 Cutter LAD R 956 92.1 16.8 2.4 13 6.9 2.9 74
2018 Slider LAD R 66 82.7 43.4 4.5 12 6.1 1.1 22
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
2017 Sinker LAD R 66 94.8 9.3 -7.7 -45 6.8 -7.3 -52
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 Slider LAD R 83 83.5 43.3 5.1 13 7.9 2.5 46
2015 Cutter LAD R 636 93.1 17.4 1.7 9 5.0 1.3 34
! 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 0.9 6 645 85.3 171 .222 .359 .290 27.6 28.1 26.1 .225 .402 .305 38.9
2024 Sinker 1.9 1 56 7.4 21 .200 .200 .205 29.7 42.9 32.1 .226 .259 .236 36.4
2024 Slider 4.0 2 55 7.3 12 .000 .000 .058 0.0 8.3 4.8 .168 .239 .217 20.0
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 12 629 58.7 157 .171 .240 .266 31.5 24.2 24.7 .207 .322 .309 24.5
2021 Sinker 1.8 5 277 25.9 72 .156 .234 .228 33.3 38.9 30.1 .166 .229 .230 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 638 92.2 80 18.0 11:45 11:15 30
2024 Sinker 54 93.3 98 20.0 12:15 12:30 -15
2024 Slider 54 82.5 43 9.6 8:30 8:00 30
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 621 92.5 78 18.5 11:30 11:15 15
2021 Sinker 273 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
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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
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 204 756 11 4 -3 -2 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 756 58.2 67.5 80.1 25.3 43.8 44.3 67.3 49.9 26.3 9.0 79.4
Player 9,018 54.6 70.4 73.5 31.7 54.5 43.5 67.6 52.8 31.1 8.8 79.5
MLB 48.7 67.0 82.0 28.5 57.8 42.6 61.0 47.2 24.9 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 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 62 82 100
2019 93 87 88 81 93 74 67 96 99 87 78 88 98 48 68 99
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 75 79 66 53 75 49 4 9 65 86 37 57 15 37 58 82
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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 22.3 5 6.2 -1 3 5 2 40.0
2017 22.7 7 5.9 1 2 7 2 28.6
2018 21.8 15 11.0 4 6 7 5 33.3
2019 22.2 9 7.1 2 2 5 4 44.4
2020 25.8 3 3.5 -1 3 0 3 100.0
2021 23.1 4 3.3 1 2 2 2 50.0
2022 25.2 9 8.7 0 5 5 5 55.6
2023 24.9 5 5.6 -1 3 2 4 80.0
2024 21.7 4 5.7 -2 2 6 2 50.0
Player 23.1 61 56.9 4 28 39 29 47.5
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 5 6 6 7 6 6 6 7 5 5 6 7 6 6 6 7 4 6 7 7 6 4 7 9 7 6 7 8 6 6 3
2017 7 9 4 5 5 5 8 5 5 3 7 8 6 6 5 8 5 5 8 5 7 7 7 9 5 3 4 7 8 5 3
2018 15 15 10 12 10 9 12 10 7 7 9 12 16 10 9 12 9 10 12 12 14 13 15 14 9 9 10 12 15 9 7
2019 9 9 8 6 7 5 8 8 5 5 6 5 9 8 7 8 6 6 8 7 9 7 9 9 7 7 5 7 9 6 7
2020 3 3 4 5 3 3 3 4 3 3 3 4 4 3 3 3 5 3 3 3 4 4 5 3 3 3 3 3 4 4 3
2021 4 3 3 5 3 3 4 5 3 3 3 4 3 2 4 4 2 3 3 3 3 3 5 4 2 3 4 3 3 3 3
2022 9 8 10 8 8 8 9 8 6 8 8 10 10 10 8 11 8 7 10 8 9 9 10 10 7 7 10 9 10 8 9
2023 5 4 5 8 5 5 5 5 6 5 5 6 6 5 6 7 6 5 6 6 6 5 7 7 5 5 5 5 6 5 5
2024 4 5 4 5 5 5 6 4 5 4 5 6 6 4 5 4 4 6 5 8 6 4 7 8 5 8 5 8 9 8 8
Player 61 62 54 61 52 49 61 56 45 43 52 62 66 54 53 64 49 51 62 59 64 56 72 73 50 51 53 62 70 54 48
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.