Pitcher · 2026
Kenley Jansen
- Age
- 39
- B/T
- S/R
- Height
- 6' 5"
- Weight
- 265 lb
- Number
- #74
- Born
- September 30, 1987 in Willemstad, Curacao
- MLB debut
- July 24, 2010
- Salary, 2026
- $9M
- dbWAR
- 1.4 3 season(s)
- IP
- 30.2
- ERA
- 3.82
- FIP
- 4.55
- K/9
- 10.9
- FIP−
- 109 100 = avg
Kenley Jansen is a relief pitcher for the Detroit Tigers. In 2026 he struck out 37 batters over 30.2 innings across 34 appearances, going 3-4. His ERA of 3.82 was 8.6% lower than the league average of 4.18 — 11th of 17 on his team, and 225th of 467 among MLB pitchers with 20+ innings. Stripping out defence, his 4.55 FIP suggests that his ERA had some help behind him. He missed bats on 28.6% of swings (13.9% of every pitch he threw), walked 14.1% of the batters he faced and struck out 28.9%. His 0.0 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.
League context
Percentile among qualified pitchers, 2026.
Platoon splits
How left- and right-handed hitters fare against him.
| Split | PA | AB | H | HR | BB | SO | AVG | OBP | SLG | wOBA | K% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| vs LHB | 67 | 54 | 7 | 3 | 13 | 22 | .130 | .299 | .315 | .283 | 32.8% |
| vs RHB | 61 | 55 | 12 | 2 | 5 | 15 | .218 | .279 | .345 | .277 | 24.6% |
Pitch sequencing
What Kenley Jansen throws in each count, and what he follows each pitch with. Select any cell for the breakdown.
Select a count to see exactly what Kenley Jansen throws in it.
Pitch arsenal
What he throws, how hard, and how often it misses in 2026.
| Cutter | 436 | 92.4 | 2,658 | 50.0% | 27.5% | |
| Slider | 43 | 84.4 | 2,511 | 39.5% | 31.8% | |
| Sinker | 33 | 93.7 | 2,357 | 54.5% | 36.4% |
Pitching
Standard and advanced, by season.
| Trend | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 34 | 0 | 30.2 | 3 | 4 | 13 | 19 | 13 | 37 | 18 | 3.82 | 4.55 | 1.21 | 10.9 | 5.3 | 91 | 109 | 0.0 | |
| 2025 | 62 | 0 | 59.0 | 5 | 4 | 29 | 37 | 17 | 57 | 19 | 2.59 | 3.98 | 0.95 | 8.7 | 2.9 | 62 | 96 | 0.4 | |
| 2024 | 54 | 0 | 54.2 | 4 | 2 | 27 | 38 | 20 | 62 | 20 | 3.29 | 3.00 | 1.06 | 10.2 | 3.3 | 81 | 74 | 1.0 |
Head to head
Put Kenley Jansen beside up to three others.
Similar players
Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.
wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.