2025 Stats
W-L
0-1
ERA
5.79
WHIP
1.39
K
9
SV
7
Rest-of-Season 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

Secures save No. 7
Jansen retired the only two batters he faced in Saturday's win against the Tigers to earn his seventh save of the season.
ANALYSIS
The 37-year-old wasn't expected to be needed Saturday since the Angels entered the ninth inning leading 5-1, but Brock Burke was unable to finish things out and created a save situation. Jansen's previous appearance Thursday was a disaster as he gave up six runs on three homers in a non-save situation, but that's the only time in 10 outings this season he's been charged with a run. His 5.79 ERA and 1.39 WHIP are inflated due to that stumble, but Jansen has a 9:2 K:BB while converting all seven of his save chances this year.
The 37-year-old wasn't expected to be needed Saturday since the Angels entered the ninth inning leading 5-1, but Brock Burke was unable to finish things out and created a save situation. Jansen's previous appearance Thursday was a disaster as he gave up six runs on three homers in a non-save situation, but that's the only time in 10 outings this season he's been charged with a run. His 5.79 ERA and 1.39 WHIP are inflated due to that stumble, but Jansen has a 9:2 K:BB while converting all seven of his save chances this year.
Pitching Stats
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Minor League Game Log

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Pitching Appearances Breakdown
Average Pitch Count
14
Last 10 Games
14
Last 5 Games
15
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 2023
-11%
BAA vs RHP
2025
-66%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2023vs Left | .236 | 56 | 20 | 45 | 7 | |||
Since 2023vs Right | .210 | 67 | 19 | 44 | 5 | |||
2025vs Left | .444 | 2 | 2 | 8 | 2 | |||
2025vs Right | .150 | 7 | 0 | 3 | 1 | |||
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 | |||
More Splits→ | View More Split Stats |
Home/Away Pitching Splits
Since 2023
-40%
ERA on Road
2025
-100%
ERA on Road
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2023Home | 4.58 | 1.28 | 53.0 | 9.5 | 3.1 | ||||
Since 2023Away | 2.75 | 1.08 | 55.2 | 10.8 | 3.4 | ||||
2025Home | 12.46 | 1.62 | 4.1 | 6.2 | 0.0 | ||||
2025Away | 0.00 | 1.20 | 5.0 | 10.8 | 3.6 | ||||
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 | ||||
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
4.50K/9
8.7BB/9
1.9HR/9
2.9Fastball
92.2 mphERA
5.79WHIP
1.39BABIP
.316GB/FB
0.40Left On Base
79.5%Exit Velocity
83.6 mphBarrels/BBE
2.3%Spin Rate
2565 rpmBalls Hit 95+ MPH
18.6%Swinging Strike
14.6%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
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2022
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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

Melts down in non-save spot
Jansen (0-1) took the loss Friday, surrendering six runs on six hits -- including three home runs -- in two-thirds of an inning as the Angels fell 9-1 to the Tigers. He struck out one.
ANALYSIS
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Locks down sixth save
Jansen secured the save in Thursday's 4-3 win over Pittsburgh after allowing one hit in a scoreless ninth inning. He struck out one.
ANALYSIS
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Notches fifth save
Jansen worked a perfect ninth inning Friday to record his fifth save of the season in a 2-0 win over the Giants. He didn't walk or strike out a batter.
ANALYSIS
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Grabs fourth save
Jansen earned the save in Saturday's 4-1 win over the Angels, allowing one hit while striking out one in a scoreless ninth inning.
ANALYSIS
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Escapes with save
Jansen allowed two hits in a scoreless inning during Tuesday's win against the Rays. He struck out two and earned a save.
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.