Kenley Jansen Career Pitching Summary

  • May 7, 2025

Kenley Jansen played in Major League Baseball from 2010 to 2025, appearing in 933 games over 16 seasons. He recorded a total of 54 W and 40 L, an ERA of 2.57, 1,278 SO, a WHIP of 0.962, and a WAR of 24.2.

🧾 Basic Profile

Kenley Jansen
NameKenley Jansen
Date of BirthSeptember 30, 1987
Nationality
Curaçao
PositionPitcher
ThrowsRight
BatsBoth
MLB Debut2010

Kenley Jansen Yearly Pitching Stats

This chart shows the season-by-season changes in ERA, SO, and IP for Kenley Jansen.

Change Chart

    📊 Career Summary

    Kenley Jansen appeared in 933 games over 16 MLB seasons from 2010 to 2025. Below are his cumulative stats and MLB all-time rankings:

    GS0 (MLB Rank: 8,004)
    GF700 (MLB Rank: 7)
    W54 (MLB Rank: 1,361)
    L40 (MLB Rank: 1,922)
    SV476 (MLB Rank: 4)
    ERA2.57 (MLB Rank: 910)
    IP927.1 (MLB Rank: 1,425)
    SO1,278 (MLB Rank: 342)
    BB282 (MLB Rank: 1,736)
    H610 (MLB Rank: 2,155)
    HR88 (MLB Rank: 1,131)
    SO912.4 (MLB Rank: 135)
    BB92.74 (MLB Rank: 9,342)
    H95.92 (MLB Rank: 11,446)
    HR90.85 (MLB Rank: 5,171)
    WHIP0.962 (MLB Rank: 11,626)
    WAR24.2 (MLB Rank: 434)

    📊 Last Season Summary (2025)

    In his final season (2025), Kenley Jansen recorded the following stats:

    GS0
    GF47
    W5
    L4
    SV29
    ERA2.59
    IP59
    SO57
    BB19
    H37
    HR8
    SO98.69
    BB92.9
    H95.64
    HR91.22
    WHIP0.949
    WAR2.4

    📈 Seasonal Highlights

    • Most Wins: 2012, 5 W
    • Most SO: 2013, 111 SO
    • Most IP: 2013, 76.2 IP
    • Best WAR: 2017, 3.0 WAR
    • Best ERA: 2010, 0.67 ERA

    🎯 Postseason Performance

    Kenley Jansen appeared in 59 games during the postseason. He recorded an ERA of 2.29, pitched 63 IP, struck out 94 batters, with 3 W and 2 L.

    Kenley Jansen Career Pitching Stats Overview

    seasonWLERAW-L%SVSOIPWARWHIPHRHBBRERERA+FIPSO9SO/BBGSGGFCGSHOHR9H9BB9BKHBPIBBWPBF
    2010
    1
    0
    0.67
    1
    4
    41
    27
    1.4
    1
    0
    12
    15
    2
    2
    588
    1.82
    13.7
    2.73
    0
    25
    8
    0
    0
    0
    4
    5
    0
    1
    1
    1
    109
    2011
    2
    1
    2.85
    0.667
    5
    96
    53.2
    0.9
    1.043
    3
    30
    26
    17
    17
    130
    1.74
    16.1
    3.69
    0
    51
    13
    0
    0
    0.5
    5
    4.4
    2
    2
    0
    0
    218
    2012
    5
    3
    2.35
    0.625
    25
    99
    65
    1.9
    0.846
    6
    33
    22
    18
    17
    162
    2.4
    13.7
    4.5
    0
    65
    40
    0
    0
    0.8
    4.6
    3
    0
    3
    1
    3
    252
    2013
    4
    3
    1.88
    0.571
    28
    111
    76.2
    2.6
    0.861
    6
    48
    18
    16
    16
    190
    1.99
    13
    6.17
    0
    75
    45
    0
    0
    0.7
    5.6
    2.1
    0
    3
    1
    2
    292
    2014
    2
    3
    2.76
    0.4
    44
    101
    65.1
    1.2
    1.133
    5
    55
    19
    20
    20
    127
    1.91
    13.9
    5.32
    0
    68
    57
    0
    0
    0.7
    7.6
    2.6
    0
    0
    2
    2
    268
    2015
    2
    1
    2.41
    0.667
    36
    80
    52.1
    1.4
    0.783
    6
    33
    8
    14
    14
    154
    2.14
    13.8
    10
    0
    54
    50
    0
    0
    1
    5.7
    1.4
    0
    2
    0
    0
    200
    2016
    3
    2
    1.83
    0.6
    47
    104
    68.2
    2.8
    0.67
    4
    35
    11
    14
    14
    219
    1.44
    13.6
    9.45
    0
    71
    63
    0
    0
    0.5
    4.6
    1.4
    0
    2
    2
    1
    251
    2017
    5
    0
    1.32
    1
    41
    109
    68.1
    3
    0.746
    5
    44
    7
    11
    10
    315
    1.31
    14.4
    15.57
    0
    65
    57
    0
    0
    0.7
    5.8
    0.9
    1
    2
    0
    2
    258
    2018
    1
    5
    3.01
    0.167
    38
    82
    71.2
    0.6
    0.991
    13
    54
    17
    28
    24
    129
    4.03
    10.3
    4.82
    0
    69
    59
    0
    0
    1.6
    6.8
    2.1
    2
    2
    1
    0
    289
    2019
    5
    3
    3.71
    0.625
    33
    80
    63
    0.1
    1.063
    9
    51
    16
    28
    26
    112
    3.48
    11.4
    5
    0
    62
    51
    0
    0
    1.3
    7.3
    2.3
    3
    4
    0
    2
    263
    2020
    3
    1
    3.33
    0.75
    11
    33
    24.1
    0.4
    1.151
    2
    19
    9
    11
    9
    132
    3.03
    12.2
    3.67
    0
    27
    24
    0
    0
    0.7
    7
    3.3
    0
    3
    0
    0
    102
    2021
    4
    4
    2.22
    0.5
    38
    86
    69
    2.5
    1.043
    4
    36
    36
    21
    17
    191
    3.08
    11.2
    2.39
    0
    69
    52
    0
    0
    0.5
    4.7
    4.7
    2
    2
    4
    4
    278
    2022
    5
    2
    3.38
    0.714
    41
    85
    64
    1
    1.047
    8
    45
    22
    25
    24
    122
    3.21
    12
    3.86
    0
    65
    54
    0
    0
    1.1
    6.3
    3.1
    1
    2
    3
    1
    260
    2023
    3
    6
    3.63
    0.333
    29
    52
    44.2
    0.7
    1.276
    5
    40
    17
    21
    18
    126
    3.66
    10.5
    3.06
    0
    51
    42
    0
    0
    1
    8.1
    3.4
    2
    2
    1
    1
    188
    2024
    4
    2
    3.29
    0.667
    27
    62
    54.2
    1.3
    1.061
    4
    38
    20
    20
    20
    130
    3
    10.2
    3.1
    0
    54
    38
    0
    0
    0.7
    6.3
    3.3
    2
    1
    2
    2
    218
    2025
    5
    4
    2.59
    0.556
    29
    57
    59
    2.4
    0.949
    8
    37
    19
    18
    17
    165
    3.98
    8.7
    3
    0
    62
    47
    0
    0
    1.2
    5.6
    2.9
    3
    1
    2
    0
    234