Kenley Jansen

P Detroit Tigers
Age 39 RHP 6'5" / 265 lbs MLB peak 0.1 · 2027
Overview
MLBRP40-MAN
YearAgeLvl / TeamGGSIPERAFIPK%BB%WARMLE rates
202436MLBBOS540553.292.7728.4%8.3%1.2
202537MLBLAA620592.593.7924.4%7.3%0.5
202638MIX2 levels510463.744.3328.1%12.4%0.1K 28.3% · BB 12.2% · FIP 4.48
2027PROJ39MLBDET400424.004.3526.5%10.0%0.1
2028PROJ40MLBDET180194.474.7825.3%10.7%-0.1
Last 3 seasons WAR 1.8  ·  Next 2 projected WAR 0.0Projected rows: MLB playing time only, park and league context applied.
Contract
No contract data on file.
Skills · percentileStatcast 2026
K%83
xwOBA vs70
FB Velo41
Form2.20 ERA (proj 4.00) · K 31.7% (proj 26.5%) · BB 8.3% (proj 10.0%) ▲▲ last 90d · 16 IP through Oct 27
CompsTakashi Saito (age 39) · Juan Sandoval (age 38) · Keiichi Yabu (age 39)
2027 FULL-SEASON PROJECTIONrates below = full-season projection
showingPROJ
wRC+ AGAINSTvL 108100vR 91
ERA4.00
FIP4.35
K%26.5%
BB%10.0%
K-BB%16.5%
Proj IP42
Value2027 · WAR
Runs saved vs league avg · 42 IP
K: +0.9 runs (Runs saved by strikeouts vs lg-avg K%)+1KBB: -0.4 runs (Runs saved by walk suppression vs lg-avg BB%)-0BBCONTACT: -1.2 runs (Runs saved on contact quality (HR suppression) vs lg)-1CONTACTSTAM: +1.7 runs (Replacement credit for innings volume)+2STAMTotal WAR: +0.10 (42 IP)+0.1WAR
0.1-0.12728
Statcast · Contract
Statcast Percentiles
FB Velo
p4193.9
Whiff%
p5826.6%
K%
p8328.3%
xwOBA vs
p700.293

Contract

No contract data on file. Pre-MLB players and minor-league free agents do not yet have salary projections — entries are added at first 40-man roster placement.

Career Stats + Projections

Real MLB stats plus park-adjusted projections — this season (so far / rest / full), then future seasons and career totals.
basis chips: RAW = as recorded · CTX = with park/league context · A+C = actual + context combined · MLE = level/park-neutral
Methodology▸ how WAR & MLE are computed

Stats are park-neutral MLB equivalents. The "TEAM" column shows current org affiliation only — we do NOT project at that team's park.
Rates (K%, BB%, HR-BF) are park-stripped; MiLB stat lines are translated to their MLB-equivalent via per-level MLE factors.
WAR is computed from projected runs prevented vs a replacement pitcher (the marginal arm a team would call up if this pitcher were unavailable) — calibrated to the standard WAR scale.

YearAge LvlTeam GGSIPBF KBBHR GS%IP/G K%BB%K-BB%HR% ERAFIP WAR
▸ Career — actual stats, one row per year (as recorded, no adjustments)
▸ Career — adjusted (each season translated to a park/league-neutral MLB-equivalent line; levels combined per year)
▸ Model inputs — neutral MLE (past 3 seasons + 2027 so far)
201022MLB MLELos Angeles Dodgers25027109411400%1.137.6%12.8%24.8%0.0%0.671.55+1.0
201022MLB RAWLos Angeles Dodgers25027109411400%1.137.6%12.8%24.8%0.0%0.671.62+1.0
201123MLB MLELos Angeles Dodgers51054218962630%1.144.0%11.9%32.1%1.3%2.851.62+1.9
201123MLB RAWLos Angeles Dodgers51054218962630%1.144.0%11.9%32.1%1.4%2.851.70+1.8
201224MLB MLELos Angeles Dodgers65065252992160%1.039.3%8.3%31.0%2.3%2.352.09+1.9
201224MLB RAWLos Angeles Dodgers65065252992160%1.039.3%8.3%31.0%2.4%2.352.22+1.8
201325MLB MLELos Angeles Dodgers750772921111760%1.038.0%5.8%32.2%2.0%1.881.71+2.6
201325MLB RAWLos Angeles Dodgers750772921111760%1.038.0%5.8%32.2%2.1%1.881.89+2.5
201426MLB MLELos Angeles Dodgers680652681011750%1.037.7%6.3%31.3%1.8%2.761.70+2.2
201426MLB RAWLos Angeles Dodgers680652681011750%1.037.7%6.3%31.3%1.9%2.761.78+2.2
201527MIX MLE2 levels6055822188978%1.040.0%4.0%36.0%2.9%2.651.81+1.9
201527MIX RAW2 levels6055822188978%1.039.8%4.1%35.7%3.2%2.652.09+1.7
201628MLB MLELos Angeles Dodgers71069251104940%1.041.4%3.6%37.8%1.5%1.830.89+3.0
201628MLB RAWLos Angeles Dodgers71069251104940%1.041.4%3.6%37.8%1.6%1.831.22+2.8
201729MLB MLELos Angeles Dodgers65068258109750%1.142.2%2.7%39.5%1.9%1.320.90+3.0
201729MLB RAWLos Angeles Dodgers65068258109750%1.142.2%2.7%39.5%1.9%1.321.17+2.8
201830MLB MLELos Angeles Dodgers690722898216130%1.028.4%5.5%22.8%4.3%3.013.77+0.7
201830MLB RAWLos Angeles Dodgers690722898216130%1.028.4%5.5%22.8%4.5%3.013.84+0.6
201931MLB MLELos Angeles Dodgers62063263801690%1.030.4%6.1%24.3%3.3%3.713.10+1.1
201931MLB RAWLos Angeles Dodgers62063263801690%1.030.4%6.1%24.3%3.4%3.713.18+1.0
202032MLB MLELos Angeles Dodgers2702410233920%0.932.4%8.8%23.5%1.9%3.332.52+0.6
202032MLB RAWLos Angeles Dodgers2702410233920%0.932.4%8.8%23.5%2.0%3.332.57+0.6
202133MLB MLELos Angeles Dodgers69069278863240%1.030.9%11.5%19.4%1.4%2.222.70+1.5
202133MLB RAWLos Angeles Dodgers69069278863240%1.030.9%11.5%19.4%1.4%2.222.75+1.5
202234MLB MLEAtlanta Braves65064260851980%1.032.7%7.3%25.4%3.1%3.382.95+1.2
202234MLB RAWAtlanta Braves65064260851980%1.032.7%7.3%25.4%3.1%3.382.96+1.2
202335MLB MLEBoston Red Sox51045188521650%0.927.7%8.5%19.1%2.7%3.633.34+0.6
202335MLB RAWBoston Red Sox51045188521650%0.927.7%8.5%19.1%2.7%3.633.30+0.7
202436MLB MLEBoston Red Sox54055218621840%1.028.4%8.3%20.2%1.9%3.292.78+1.2
202436MLB MLEBoston Red Sox54055218621840%1.028.4%8.3%20.2%1.9%3.292.78+1.2
202436MLB RAWBoston Red Sox54055218621840%1.028.4%8.3%20.2%1.8%3.292.77+1.2
202537MLB MLELos Angeles Angels62059234571780%1.024.4%7.3%17.1%3.4%2.593.80+0.5
202537MLB MLELos Angeles Angels62059234571780%1.024.4%7.3%17.1%3.4%2.593.80+0.5
202537MLB RAWLos Angeles Angels62059234571780%1.024.4%7.3%17.1%3.4%2.593.79+0.5
202638MIX MLE2 levels51046185522370%0.928.3%12.2%16.1%4.1%3.744.48+0.0
202638MIX MLE2 levels51046185522370%0.928.3%12.2%16.1%4.1%3.744.48+0.0
202638MIX RAW2 levels51046185522370%0.928.1%12.4%15.7%3.8%3.744.33+0.1
▸ Career totals (raw MLB only — as recorded)
MLB Career—983097238601329284950%1.034.4%7.4%27.1%2.5%2.602.51+23.7
▸ 2027 season — projected remainder (no 2027 stats recorded)
202739MLBDET40042177471860%1.126.5%10.0%16.5%3.3%4.004.35+0.1
▸ Career projection (2028+) — MLB context, MLB playing time (IP × MLB%)
202840MLB MLEDET180197920830%1.025.3%10.7%14.6%3.8%4.474.78-0.0
202840MLB CTXDET180198020930%1.125.3%10.7%14.6%3.8%4.474.78-0.1
▸ Career totals — MLB only (actual + projected)
Career— RAW1001099139391349292980%1.034.2%7.4%26.8%2.5%2.642.51+24.2
/ 200 IP— RAW202020079527259200%1.034.2%7.4%26.8%2.5%2.642.51+4.9
Career— MLE990597838861339285941%1.034.5%7.3%27.1%2.4%2.642.44+23.7
/ 200 IP— MLE202120079427458191%1.034.5%7.3%27.1%2.4%2.642.44+4.8

How the minor-league lines were translated

One row per minor-league stint. Open a row to see each step: the raw rate, the park adjustment, the league/level factor, the age adjustment (hitters) and the resulting MLE rate. Factors are the same ones listed on the MLE Factors page.

2015 A+Rancho Cucamonga Quakes · 5 IPFIP 3.10 → 4.95 (+1.85)K% 38.1% → 29.3%
ComponentRawPark ÷Level factor ×= MLE
K% /BF38.10%—×0.77029.33%
BB% (unintentional) /BF4.76%—×1.1505.48%
HR / BF /BF4.76%÷0.898×1.2506.63%

Factors used: pitcher A+ level factors — K ×0.77, BB ×1.15, HR ×1.25. Pitcher translation is level-wide (no per-league rows, no age adjustment); HR/BF is park-adjusted at half strength (park HR factor 80).

Result: FIP 3.10 → 4.95, computed from the rates in the table with the same formula before and after. The MLE line is not regressed to the mean — regression is applied when seasons are blended into a projection (how).

Career Comps

Completed MLB careers (no pro action in 2+ yrs) whose totals — actual + projected — most resemble this player's. Pool: 1,234 reliever careers (754 from 1990-2025 + 480 historical, 1901-2023), also matched on career-to-date at the same age. * Historical (Lahman) careers: rates era-adjusted to 2001-24 league levels; WAR is an OGILVIE proxy.

Player162sIP/yrK%BB%HR/9ERA
OGILVIE CAREER PROJECTION5.25433.9%8.0%0.982.69
Billy Wagner ('10)4.56533.2%8.3%0.822.31
Tom Henke ('82-'95, 25 WAR*)3.96635.9%*7.7%*0.93*2.72*
David Robertson ('25)4.56431.9%9.9%0.822.93
Lee Smith ('80-'97, 29 WAR*)6.47230.4%*8.9%*0.89*3.24*
Francisco Rodríguez ('17)4.96528.5%9.7%0.902.86
Dan Plesac ('86-'03, 16 WAR*)5.46028.6%*8.5%*1.02*3.65*