2025 Stats
W-L
0-2
ERA
4.96
WHIP
1.41
K
16
SV
11
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

Notches 11th save
Jansen walked two and struck out one over a scoreless and hitless inning to earn the save in Friday's 7-4 win over the Marlins.
ANALYSIS
After pitching four times in five days from May 16-20, Jansen had a couple of days off before the Angels' next save chance occurred. He made this one a little interesting, as he put two runners in scoring position, but he got Graham Pauley to pop out to end the threat. Jansen has given up just one run over his last 5.1 innings despite allowing at least one baserunner in all five appearances in that span. For the year, he's at a 4.96 ERA, 1.41 WHIP and 16:5 K:BB over 16.1 innings while converting all 11 of his save chances, so his status as the Angels' closer isn't in danger.
After pitching four times in five days from May 16-20, Jansen had a couple of days off before the Angels' next save chance occurred. He made this one a little interesting, as he put two runners in scoring position, but he got Graham Pauley to pop out to end the threat. Jansen has given up just one run over his last 5.1 innings despite allowing at least one baserunner in all five appearances in that span. For the year, he's at a 4.96 ERA, 1.41 WHIP and 16:5 K:BB over 16.1 innings while converting all 11 of his save chances, so his status as the Angels' closer isn't in danger.
Pitching Stats
Loading Pitching Stats...
2025
2024
2023
2022
2021
2020
2019
2018
2017
Minor League Game Log

Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Pitching Appearances Breakdown
Average Pitch Count
15
Last 10 Games
15
Last 5 Games
17
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
-5%
BAA vs RHP
2025
-24%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2023vs Left | .230 | 61 | 22 | 48 | 7 | |||
Since 2023vs Right | .218 | 69 | 20 | 48 | 6 | |||
2025vs Left | .306 | 7 | 4 | 11 | 2 | |||
2025vs Right | .233 | 9 | 1 | 7 | 2 | |||
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
-34%
ERA on Road
2025
-71%
ERA on Road
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2023Home | 4.45 | 1.30 | 54.2 | 9.4 | 3.3 | ||||
Since 2023Away | 2.95 | 1.10 | 61.0 | 10.8 | 3.2 | ||||
2025Home | 9.00 | 1.67 | 6.0 | 6.0 | 3.0 | ||||
2025Away | 2.61 | 1.26 | 10.1 | 10.5 | 2.6 | ||||
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
3.20K/9
8.8BB/9
2.8HR/9
2.2Fastball
92.7 mphERA
4.96WHIP
1.41BABIP
.318GB/FB
0.40Left On Base
80.5%Exit Velocity
85.5 mphBarrels/BBE
8.8%Spin Rate
2533 rpmBalls Hit 95+ MPH
27.5%Swinging Strike
13.0%Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
Recent RotoWire Articles Featuring Kenley Jansen See More

Which closers have most improved their ranking so far this season, and which have tumbled down the list?

Discover the pitchers poised for a breakout in fantasy baseball like the Mets' Kodai Senga. Assess risk vs. reward as they bounce back from rocky starts and hint at future success.

James Anderson provides the top relief pitching prospects for your dynasty leagues on all 30 teams, plus the top reliever prospects to add in dynasty leagues, led by Rays lefty Mason Montgomery!

Check out the top AL fantasy baseball waiver wire pickups and FAAB targets for this week. Get expert advice to stay ahead in your fantasy baseball league.
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

Earns 10th save
Jansen allowed a run on two hits and struck out two over one inning to earn the save in Tuesday's 7-5 win over the Athletics.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Locks down ninth save
Jansen allowed a hit and struck out one over a scoreless inning to earn the save in Monday's 4-3 win over the Athletics.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Secures four-out save
Jansen allowed a hit over 1.1 scoreless innings to earn the save in Saturday's 11-9 win over the Dodgers. He did not strike out or walk a batter.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Gives up walk-off homer
Jansen (0-2) allowed two runs on a hit and a walk while failing to record an out, taking the loss Tuesday versus the Padres.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.

Makes appearance in loss
Jansen allowed one hit in a scoreless two-thirds of an inning during Friday's 4-1 loss to the Orioles. He did not record a strikeout or a walk.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Subscribe now to instantly reveal our take on this news.
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.