2024 Stats
W-L
4-2
ERA
3.29
WHIP
1.06
K
62
SV
27
2025 Projections
2025 Fantasy Outlook
Jansen led Boston with 27 saves (12th in the league) and a 67.5% team save share that ranked 10th among closers. The veteran's outputs were fairly consistent with recent seasons and he remained healthy for the most part, overcoming minor back and lat ailments before closing out September on the injured list with right shoulder inflammation. The 37-year-old free-agent leads active relievers with 447 career saves and is 32 away from third place on the all-time list. Landing with the Angels should provide him a solid grip on the closer role, but flamethrower Ben Joyce is waiting in the wings and could see occasional save chances. Read Past Outlooks

Set for spring debut Saturday
Jansen (shoulder) will make his spring debut Saturday against the Athletics, Jeff Fletcher of The Orange County Register reports
ANALYSIS
Jansen ended the 2024 season on the shelf with shoulder inflammation, but it wasn't expected to be an issue that lingered into this year. He signed a one-year, $10 million deal with the Angels earlier in February and should open the year in the closer role, with Ben Joyce learning from him. Jansen is 32 saves away from moving ahead of Lee Smith for third all time in MLB's career rankings.
Jansen ended the 2024 season on the shelf with shoulder inflammation, but it wasn't expected to be an issue that lingered into this year. He signed a one-year, $10 million deal with the Angels earlier in February and should open the year in the closer role, with Ben Joyce learning from him. Jansen is 32 saves away from moving ahead of Lee Smith for third all time in MLB's career rankings.
Pitching Stats
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Minor League Game Log

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Pitching Appearances Breakdown
Average Pitch Count
15
Last 10 Games
14
Last 5 Games
13
How many pitches does Kenley Jansen generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Kenley Jansen generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2022
-7%
BAA vs RHP
2024
-27%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2022vs Left | .214 | 93 | 30 | 60 | 10 | |||
Since 2022vs Right | .199 | 106 | 29 | 63 | 7 | |||
2024vs Left | .228 | 29 | 10 | 21 | 2 | |||
2024vs Right | .167 | 33 | 10 | 17 | 2 | |||
2023vs Left | .198 | 25 | 8 | 16 | 3 | |||
2023vs Right | .273 | 27 | 9 | 24 | 2 | |||
2022vs Left | .213 | 39 | 12 | 23 | 5 | |||
2022vs Right | .175 | 46 | 10 | 22 | 3 | |||
More Splits→ | View More Split Stats |
Home/Away Pitching Splits
Since 2022
-18%
ERA on Road
2024
-7%
ERA at Home
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2022Home | 3.75 | 1.18 | 84.0 | 11.0 | 3.2 | ||||
Since 2022Away | 3.06 | 1.05 | 79.1 | 10.9 | 3.3 | ||||
2024Home | 3.18 | 1.02 | 28.1 | 9.2 | 2.5 | ||||
2024Away | 3.42 | 1.10 | 26.1 | 11.3 | 4.1 | ||||
2023Home | 4.87 | 1.57 | 20.1 | 10.6 | 4.4 | ||||
2023Away | 2.59 | 1.03 | 24.1 | 10.4 | 2.6 | ||||
2022Home | 3.57 | 1.08 | 35.1 | 12.7 | 3.1 | ||||
2022Away | 3.14 | 1.01 | 28.2 | 11.0 | 3.1 | ||||
More Splits→ | View More Split Stats |
Stat Review
How does Kenley Jansen compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
3.10K/9
10.2BB/9
3.3HR/9
0.7Fastball
93.3 mphERA
3.29WHIP
1.06BABIP
.269GB/FB
0.68Left On Base
72.5%Exit Velocity
84.5 mphBarrels/BBE
7.1%Spin Rate
2593 rpmBalls Hit 95+ MPH
23.0%Swinging Strike
12.1%Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
Jansen recorded his 400th career save last May en route to his 4th All-Star nomination. The veteran closer finished with 29 saves, enough to overtake Craig Kimbrel for the top spot on the active saves leaderboard. Jansen only made 51 appearances, his lowest mark since 2015, as he dealt with various ailments (back, knee, hamstring). Only a bout with COVID required a trip to the IL, though, and Jansen was still able to close out 67.4% of Boston's total saves. While there was concern he would have trouble adjusting to the pitch clock - he was dead last in pitch tempo (18.9 sec) with the bases empty - he only had 3 pitch clock violations all year, all in one game. Jansen also added velocity, averaging 94.3 mph (+2.1% difference from 2022) on his trademark cutter that he threw 78.8% of the time. Jansen is clearly on the downswing of his career - his 1.28 WHIP last season was his worst to date - but expecting another 25+ saves from him is not unreasonable.
More Fantasy News

Receives one-year deal
Jansen (shoulder) agreed to a one-year, $10 million contract with the Angels on Tuesday, Joel Sherman of the New York Post reports.
ANALYSIS
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In talks with Toronto
The Blue Jays have had contract talks with Jansen (shoulder), Hector Gomez of Z101 Digital reports.
ANALYSIS
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IL move made official
The Red Sox placed Jansen on the 15-day injured list Monday with right shoulder inflammation, Jen McCaffrey of The Athletic reports.
ANALYSIS
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Set to go on IL
Manager Alex Cora told reporters Sunday that Jansen is likely to be placed on the 15-day injured list Monday due to a right shoulder injury, Chris Cotillo of MassLive.com reports.
ANALYSIS
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Returns with clean frame
Jansen (shoulder) threw a perfect ninth inning in Friday's extra-innings loss to the Twins. He did not record a strikeout.
ANALYSIS
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Latest Fantasy Rumors

Unwilling to pitch in setup role?
The Mets had contract talks with Jansen, but the pitcher's goal of reaching 500 career saves, along with his likely price tag, scuttled discussions, Ken Rosenthal and Will Sammon of The Athletic report.
ANALYSIS
The presence of Edwin Diaz meant Jansen would have been pegged for a setup role in New York. While it's not clear whether Jansen, who ended 2024 on the IL due to shoulder inflammation, is adamantly opposed to signing somewhere he would not be the closer, his quest to reach the 500-save plateau -- he's 53 saves away -- suggests that might be the case. The Blue Jays and Cubs have also been connected to Jansen, but that was before they acquired Jeff Hoffman and Ryan Pressly, respectively.
The presence of Edwin Diaz meant Jansen would have been pegged for a setup role in New York. While it's not clear whether Jansen, who ended 2024 on the IL due to shoulder inflammation, is adamantly opposed to signing somewhere he would not be the closer, his quest to reach the 500-save plateau -- he's 53 saves away -- suggests that might be the case. The Blue Jays and Cubs have also been connected to Jansen, but that was before they acquired Jeff Hoffman and Ryan Pressly, respectively.