← Detroit Tigers
Kenley Jansen
Detroit Tigers
RP · #74 · Bats B · Throws R · 6'5" · 265 lb · Age 39 · 17 yrs in MLB
2026 grade
44.1
- Runs prevented
- +1.3
- IP · ERA
- 45.0 · 3.20
- K · BB
- 51 · 23
- Rank
- 115 of 205 relievers
What the grade is made of
Runs each part saves or costs against an average pitcher facing the same batters. Contact counts a quarter for how it turned out, because over a season that's mostly the fielders and luck.
- Strikeouts51 vs 40 avg+3.0
- Home runs allowed7 vs 5 avg−2.1
- Walks22 vs 15 avg−2.1
- Contact allowed (how it turned out counts a quarter)98 vs 116 avg+1.8
- Hit batters1 vs 2 avg+0.4
- Parks pitched in+0.3
2026 game log: pitching
Game grades need 3 batters faced; starts are ranked against starts, relief outings against relief outings.
| Game | Result | Dec | IP | H | R | ER | BB | K | HR | PC | Grade |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Fri, Sep 25vsPIT | W 8-7 | S | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 13 | 87.4 |
| Wed, Sep 23vsWSH | L 2-4 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 87.4 | |
| Fri, Sep 18@CHW | W 11-8 | S | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 10 | 77.3 |
| Mon, Sep 14@TOR | W 6-5 | S | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 13 | 50.7 |
| Sat, Sep 12vsCOL | W 11-7 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 19 | 62.6 | |
| Fri, Sep 11vsCOL | W 6-2 | S | 0.1 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | – |
| Mon, Sep 7vsMIN | W 5-4 | S | 1.0 | 0 | 0 | 0 | 1 | 0 | 0 | 11 | 51.4 |
| Sun, Sep 6@CLE | L 2-3 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 80.5 | |
| Fri, Sep 4@CLE | L 3-4 | L | 1.2 | 1 | 1 | 0 | 0 | 2 | 0 | 20 | 89.5 |
| Wed, Sep 2@MIN | W 11-6 | B | 0.1 | 1 | 0 | 0 | 1 | 1 | 0 | 17 | 24.9 |
| Sat, Aug 29vsLAD | W 2-1 | W | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | – |
| Tue, Aug 25vsTB | W 4-1 | S | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 16 | 87.4 |
| Wed, Aug 19@PIT | L 3-4 | L | 0.2 | 2 | 2 | 2 | 0 | 1 | 2 | 17 | 2.8 |
| Mon, Aug 17@PIT | W 8-5 | S | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 8 | 84.3 |
| Thu, Aug 13vsCLE | W 3-0 | S | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 88.5 |
| Tue, Aug 11vsCLE | W 6-4 | S | 1.0 | 1 | 1 | 1 | 2 | 0 | 0 | 29 | 29.9 |
| Sun, Aug 9@SF | W 3-1 | W | 1.0 | 0 | 0 | 0 | 0 | 3 | 0 | 15 | 72.3 |
| Sat, Aug 1@ATH | W 8-6 | S | 1.0 | 2 | 1 | 1 | 0 | 2 | 0 | 20 | 27.7 |
| Wed, Jul 29vsBAL | L 9-10 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 18 | 66.2 | |
| Fri, Jul 24vsKC | W 2-1 | S | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 8 | 89.0 |
| Wed, Jul 22@CHC | W 5-1 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 19 | 62.1 | |
| Mon, Jul 20@CHC | W 8-6 | W | 1.0 | 1 | 0 | 0 | 2 | 2 | 0 | 28 | 30.2 |
| Sun, Jul 19@LAA | L 2-3 | 1.0 | 0 | 0 | 0 | 1 | 2 | 0 | 19 | 65.0 | |
| Sat, Jul 11vsPHI | L 2-4 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 13 | 60.0 | |
| Thu, Jul 9vsATH | W 4-1 | S | 1.0 | 1 | 0 | 0 | 1 | 1 | 0 | 19 | 40.8 |
| Sun, Jul 5@TEX | W 6-3 | S | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 74.7 |
| Thu, Jul 2@TEX | L 4-10 | 0.1 | 0 | 0 | 0 | 1 | 0 | 0 | 9 | – | |
| Sun, Jun 28vsHOU | L 5-7 | L | 1.1 | 2 | 4 | 3 | 1 | 1 | 1 | 28 | 11.7 |
| Thu, Jun 25vsHOU | L 1-2 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 15 | 36.7 | |
| Sat, Jun 20vsCHW | W 4-1 | S | 1.0 | 1 | 0 | 0 | 1 | 0 | 0 | 10 | 40.7 |
| Fri, Jun 19vsCHW | W 4-3 | S | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 10 | 88.5 |
| Sat, Jun 13@CLE | L 1-3 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 9 | 77.9 | |
| Wed, May 27vsLAA | W 4-0 | 0.2 | 0 | 0 | 0 | 1 | 0 | 0 | 9 | 50.7 | |
| Sun, May 24@BAL | L 3-5 | L | 1.0 | 1 | 3 | 3 | 2 | 0 | 1 | 24 | 9.6 |
| Wed, May 20vsCLE | L 2-3 | H | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 18 | 65.0 |
| Sat, May 16vsTOR | L 1-2 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 12 | 83.1 | |
| Fri, May 15vsTOR | W 3-2 | W | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 16 | 83.1 |
| Wed, May 13@NYM | L 2-3 | 1.0 | 0 | 0 | 0 | 0 | 3 | 0 | 14 | 71.5 | |
| Sun, May 10@KC | W 6-3 | S | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 12 | 83.7 |
| Mon, May 4vsBOS | L 4-5 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 10 | 51.4 | |
| Wed, Apr 29@ATL | L 3-4 | L | 0.0 | 1 | 2 | 2 | 1 | 0 | 1 | 11 | – |
| Fri, Apr 24@CIN | L 8-9 | L | 0.2 | 2 | 2 | 2 | 0 | 1 | 1 | 14 | 9.3 |
| Wed, Apr 22vsMIL | W 5-2 | S | 1.0 | 1 | 0 | 0 | 2 | 1 | 0 | 36 | 29.7 |
| Sat, Apr 18@BOS | W 4-1 | S | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 14 | 57.1 |
| Wed, Apr 15vsKC | W 2-1 | S | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 20 | 59.5 |
| Tue, Apr 14vsKC | W 2-1 | S | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 15 | 59.5 |
| Fri, Apr 10vsMIA | W 2-0 | S | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 12 | 87.9 |
| Sat, Apr 4vsSTL | W 11-6 | 0.1 | 0 | 0 | 0 | 1 | 1 | 0 | 8 | – | |
| Tue, Mar 31@ARI | L 5-7 | B | 0.1 | 1 | 1 | 1 | 0 | 1 | 1 | 8 | – |
| Fri, Mar 27@SD | W 5-2 | S | 1.0 | 0 | 0 | 0 | 0 | 3 | 0 | 11 | 72.8 |
2026 game log: hitting
Game grades need 3 plate appearances.
Scores, box scores and play-by-play from ESPN. The run values and park factors behind the grades were worked out from Retrosheet's play-by-play: the information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.