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Kenley Jansen LAA RP R 

Born: 09/30/1987 Age: 37

FanGraphs Player Page

2025 OPL OPL Player Page

Signed By

Mississippi Riversnakes for $22

On MLB 40-man: YES
Acquired: Free Agent (BOS) Feb'25

Fri 4/11 Sat 4/12 Sun 4/13
@HOU 8:10 PM EDT @HOU 7:10 PM EDT @HOU 2:10 PM EDT

Positions
RP
2026 Earned Positions
RP

All Leagues
Average $7.83 Median $6.00
Old School (5x5)
Average $14.45 Median $15.00

Roster%
99.39%
Change
7Day 0%
30Day 36.39%

2025 OPL 2025 OPL Round 1
OPL Roster%
5.00%
OPL Average Salary
$4.25


April 9, 2025 12:05 AM : Jansen allowed two hits in a scoreless inning during Tuesday's win against the Rays. He struck out two and earned a save.
Analysis: Jansen recorded three straight outs to close up the 4-3 win after the Rays put runners on second and third to start the ninth inning. It was his third save of the year and first since March 30. Jansen tossed 15 of 20 pitches for strikes and generated five whiffs. He's thrown five straight scoreless innings to begin the 2025 season.

MLB Stats

Pitching

YearTeamGGSIP WINS SV K ERA WHIP
2010LAD25027.014410.666671.00000
2011LAD51053.225962.850931.04348
2012LAD65065.0525992.353850.84615
2013LAD75076.24281111.878260.86087
2014LAD68065.12441012.755101.13265
2015LAD54052.1236802.407640.78344
2016LAD71068.23471041.834950.66990
2017LAD65068.15411091.317070.74634
2018LAD69071.2138823.013950.99070
2019LAD62063.0533803.714291.06349
2020LAD27024.1311333.328771.15069
2021LAD69069.0438862.217391.04348
2022ATL65064.0541853.375001.04688
2023BOS51044.2329523.626871.27612
2024BOS54054.2427623.292681.06098
2025LAA505.00360.000001.00000

MILB Stats

Pitching

YearTeamGGSIP WINS SV K ERA WHIP
2009LAD (A+)12011.200194.628572.14286
2010LAD (A+)11018.010281.500001.16667
2010LAD (AA)22027.048501.666671.14815
2011LAD (A+)222.00040.000000.00000
2011LAD (AA)506.00094.500000.83333
2015LAD (A+)655.10085.062501.31250

Recent Games

Last 10 MLB Games

DateTeamOpponentGSWinSaveHoldIPTBF RERHKBBHBPHR
Apr 8, 2025 LAA @TBR 0 0 1 0 1.0 5 0 0 2 2 0 0 0
Apr 6, 2025 LAA CLE 0 0 0 0 1.0 3 0 0 0 1 0 0 0
Apr 1, 2025 LAA @STL 0 0 0 0 1.0 3 0 0 0 1 0 0 0
Mar 30, 2025 LAA @CHW 0 0 1 0 1.0 4 0 0 1 0 1 0 0
Mar 29, 2025 LAA @CHW 0 0 1 0 1.0 4 0 0 0 2 1 0 0
Sep 22, 2024 BOS MIN 0 0 0 0 1.0 3 0 0 0 1 0 0 0
Sep 20, 2024 BOS MIN 0 0 0 0 1.0 3 0 0 0 0 0 0 0
Sep 18, 2024 BOS @TBR 0 0 1 0 1.0 5 0 0 0 2 2 0 0
Sep 12, 2024 BOS @NYY 0 0 0 0 1.0 3 0 0 0 1 0 0 0
Sep 11, 2024 BOS BAL 0 0 0 0 1.0 3 0 0 1 0 0 0 0
Totals 0 0 4 0 10.0 36 0 0 4 10 4 0 0

Avg Salary & Roster%

Last 30 days

2026 Position Eligibility Progress

To gain eligibility, a player must have 5 GS or 10 G at a position in the majors, or 20 G at a position in the minors.

Transaction History

Date Transaction Type Team Salary
March 2, 2013 5:21 PM add Iowa Blackout Restrictions $15
October 11, 2013 2:36 PM increase Iowa Blackout Restrictions $17
October 8, 2014 10:52 PM increase Iowa Blackout Restrictions $19
October 5, 2015 8:00 AM increase Iowa Blackout Restrictions $21
October 7, 2016 12:12 PM increase Iowa Blackout Restrictions $23
October 7, 2017 1:41 AM increase Iowa Blackout Restrictions $25
October 12, 2018 12:40 PM increase Iowa Blackout Restrictions $27
October 4, 2019 4:39 PM increase Iowa Blackout Restrictions $29
September 30, 2020 5:40 PM increase Iowa Blackout Restrictions $31
January 29, 2021 1:05 PM cut Iowa Blackout Restrictions $0
March 16, 2021 9:32 PM add OBX Slammers $14
October 9, 2021 4:09 AM increase OBX Slammers $16
October 14, 2022 1:14 AM increase OBX Slammers $18
November 15, 2022 3:48 PM cut OBX Slammers $0
March 9, 2023 9:11 PM add Mississippi Riversnakes $19
October 12, 2023 11:25 AM increase Mississippi Riversnakes $21
October 10, 2024 12:18 AM increase Mississippi Riversnakes $23
January 31, 2025 11:28 PM cut Mississippi Riversnakes $0
March 13, 2025 9:35 PM add Mississippi Riversnakes $22

Recent Trades for Kenley Jansen in Old School (5x5)

Date Proposing Team Proposing Team Gives Accepting Team Accepting Team Gives
April 9, 2025 3:57 AM Oh My Gato Kenley Jansen LAA RP R $18 
Garrett Mitchell MIL OF L $11 
 Tan Dynasty Ceddanne Rafaela BOS 2B/SS/OF R $5 
Gavin Williams CLE SP R $5 
March 15, 2025 9:23 AM Oh My Gato Victor Robles SEA OF R $4 10IL 
Bailey Ober MIN SP R $19 
 Twink Kenley Jansen LAA RP R $18 
Sean Manaea NYM SP L $5 15IL 
Michael Toglia COL 1B/OF S $11 
March 12, 2025 12:53 PM farm league Kenley Jansen LAA RP R $11 
Willson Contreras STL C/1B R $16 
Sandy Alcantara MIA SP/RP R $8 
$5 loan 		15yr 765mil Kyle Tucker CHC OF L $45 
January 10, 2025 3:19 PM Men Without Shame Heliot Ramos SFG OF R $9 
Matt Wilkinson CLE A+ SP L $4
 Batboys Kenley Jansen BOS RP R $16 
January 5, 2025 1:42 PM Intentional Simulpuke Cody Bellinger NYY 1B/OF L $13 
 Gallen Challenge Kenley Jansen BOS RP R $22 
Nate Pearson CHC RP R $4
Landen Roupp SFG SP/RP R $4 
November 23, 2024 8:14 PM Where did Tsutsugo? Kenley Jansen BOS RP R $18 
Spencer Arrighetti HOU SP R $9 15IL 
 Chico's Bail Bonds Bears Willson Contreras STL C/1B R $11 
Yusei Kikuchi HOU SP L $5 
November 22, 2024 7:49 AM The Chicago Shadow Kenley Jansen BOS RP R $20 
 Black Beard's Delight Nick Yorke PIT AAA 2B/OF R $4 7IL 
August 30, 2024 12:44 PM Little K’s Jordan Walker STL OF R $1 
 Crazy Ranger! Kenley Jansen BOS RP R $29 
$28 loan
August 30, 2024 8:27 AM WTF Eloy Jimenez TBR AAA Util R $8
Pete Crow-Armstrong CHC OF L $5 
Ben Rice NYY C/1B L $5 
 Trash Can Bangers Kenley Jansen BOS RP R $18 
Zack Gelof OAK 2B R $6 10IL
$3 loan
August 27, 2024 6:44 PM Kenny Kawaguchi Kenley Jansen BOS RP R $20 
Raisel Iglesias ATL RP R $23 
$39 loan 		7th Inning Streakers ⚡ Robert Suarez SDP RP R $4