2025 Stats
W-L
1-2
ERA
3.94
WHIP
1.31
K
28
SV
15
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

Blows save Sunday
Jansen allowed a run on two hits and a walk while striking out one over one inning to take a blown save in Sunday's 7-4 extra-innings loss to Nationals.
Analysis
Jansen hadn't pitched since June 24, which was his return from a pectoral cramp that shortened his appearance the day before. Despite being fresh, the Nationals were able to scrape together the tying run with a Jacob Young RBI single in the ninth inning. This was Jansen's first blown save of the year -- he had converted his first 15 save chances, though he's occasionally struggled in non-save situations. The veteran closer is at a 4.40 ERA, 1.36 WHIP and 26:11 K:BB over 28.2 innings this season. Jansen has logged 25-plus saves in every full-length campaign since 2012, so one blown save is not going to be enough to cost him his role.
Jansen hadn't pitched since June 24, which was his return from a pectoral cramp that shortened his appearance the day before. Despite being fresh, the Nationals were able to scrape together the tying run with a Jacob Young RBI single in the ninth inning. This was Jansen's first blown save of the year -- he had converted his first 15 save chances, though he's occasionally struggled in non-save situations. The veteran closer is at a 4.40 ERA, 1.36 WHIP and 26:11 K:BB over 28.2 innings this season. Jansen has logged 25-plus saves in every full-length campaign since 2012, so one blown save is not going to be enough to cost him his role.
Pitching Stats
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2025 MLB Game Log
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Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
15
Last 10 Games
15
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
-6%
BAA vs RHP
2025
-22%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2023vs Left | .227 | 67 | 27 | 53 | 8 | |||
Since 2023vs Right | .214 | 75 | 21 | 53 | 7 | |||
2025vs Left | .267 | 13 | 9 | 16 | 3 | |||
2025vs Right | .207 | 15 | 2 | 12 | 3 | |||
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
-26%
ERA on Road
2025
-39%
ERA on Road
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2023Home | 4.13 | 1.28 | 61.0 | 8.7 | 3.2 | ||||
Since 2023Away | 3.04 | 1.12 | 68.0 | 11.0 | 3.4 | ||||
2025Home | 5.11 | 1.38 | 12.1 | 4.4 | 2.9 | ||||
2025Away | 3.12 | 1.27 | 17.1 | 11.4 | 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
2.55K/9
8.5BB/9
3.3HR/9
1.8Fastball
93.2 mphERA
3.94WHIP
1.31BABIP
.283GB/FB
0.46Left On Base
81.7%Exit Velocity
85.5 mphBarrels/BBE
6.9%Spin Rate
2562 rpmBalls Hit 95+ MPH
26.2%Swinging Strike
12.4%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

Back in action Tuesday
Jansen (pectoral) walked one in a scoreless and hitless inning in Tuesday's 3-2 extra-inning win over the Red Sox.
Analysis
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Avoids significant injury
Jansen left Monday's game against Boston due to a cramp in his right pectoral, Rhett Bollinger of MLB.com reports.
Analysis
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Exits with injury
Jansen left Monday's game against the Red Sox with an apparent injury, Sam Blum of The Athletic reports.
Analysis
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Locks down 15th save
Jansen earned the save in Wednesday's 3-2 win over the Yankees, striking out one in a scoreless ninth inning.
Analysis
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Gets last out Monday
Jansen recorded the final out in Monday's 7-4 win over the Athletics.
Analysis
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Latest Fantasy Rumors

Potential trade target
Jansen could be a trade target for the Phillies ahead of the deadline, Jim Bowden of The Athletic speculates.
Analysis
The Phillies' biggest need ahead of the trade deadline is bolstering the back end of their bullpen, and adding a player like Jansen would undoubtedly fix those woes. Jansen is an established veteran, and even though he's not the dominant closer he once was, he's still perfectly capable of handling late-inning duties for a contender. Jansen owns a 4.37 ERA across 25 appearances this season.
The Phillies' biggest need ahead of the trade deadline is bolstering the back end of their bullpen, and adding a player like Jansen would undoubtedly fix those woes. Jansen is an established veteran, and even though he's not the dominant closer he once was, he's still perfectly capable of handling late-inning duties for a contender. Jansen owns a 4.37 ERA across 25 appearances this season.