Kenley Jansen
P · 17 seasons · 2010 – 2026 · B/T: B/R
Few careers score higher: Kenley Jansen sits 1st of 0 pitchers all-time in roto value, built over 17 seasons. No season of his scores higher than 2017, at +13.3, 5th that season and 335th of 51,303 player-seasons on record. His profile is all upside: saves (+86.9), WHIP (+22.2) and ERA (+17.6), and nothing on the debit side.
Hitting
Best Season
-1.90
2017 · #48,656 all-time
Career Z
-36.2
summed
Avg / Season
-2.13
longevity-neutral
Seasons
17
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2010 | LAD | 26 | -1.98 | #521 | #51,380 |
| 2011 | LAD | 51 | -2.11 | #611 | #65,863 |
| 2012 | LAD | 65 | -2.13 | #610 | #68,982 |
| 2013 | LAD | 75 | -2.13 | #967 | #69,366 |
| 2014 | LAD | 68 | -2.10 | #983 | #64,706 |
| 2015 | LAD | 54 | -2.05 | #594 | #57,954 |
| 2016 | LAD | 72 | -2.02 | #590 | #54,602 |
| 2017★ | LAD | 65 | -1.90 | #523 | #48,656 |
| 2018 | LAD | 69 | -2.08 | #600 | #61,965 |
| 2019 | LAD | 62 | -2.11 | #1,047 | #65,487 |
| 2020 | LAD | 27 | -2.06 | #508 | #58,654 |
| 2021 | LAD | 69 | -2.01 | #1,105 | #52,591 |
| 2022 | ATL | 65 | -2.02 | #580 | #53,628 |
| 2023 | BOS | 51 | -2.05 | #565 | #56,873 |
| 2024 | BOS | 54 | -2.04 | #564 | #55,925 |
| 2025 | LAA | 62 | -2.01 | #554 | #52,712 |
| 2026 | DET | 50 | -3.39 | #574 | #110,552 |
★ Best season by Z
Pitching
Best Season
13.35
2017 · #335 all-time
Career Z
139.2
summed
Avg / Season
8.19
longevity-neutral
Seasons
17
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2010 | LAD | 25 | 1.01 | #175 | #14,636 |
| 2011 | LAD | 51 | 2.43 | #128 | #10,426 |
| 2012 | LAD | 65 | 7.77 | #29 | #2,428 |
| 2013 | LAD | 75 | 8.68 | #20 | #1,812 |
| 2014 | LAD | 68 | 7.96 | #28 | #2,277 |
| 2015 | LAD | 54 | 8.02 | #31 | #2,231 |
| 2016 | LAD | 71 | 12.57 | #11 | #450 |
| 2017★ | LAD | 65 | 13.35 | #5 | #335 |
| 2018 | LAD | 69 | 9.01 | #23 | #1,622 |
| 2019 | LAD | 62 | 8.85 | #31 | #1,713 |
| 2020 | LAD | 27 | 8.39 | #26 | #1,992 |
| 2021 | LAD | 69 | 11.97 | #15 | #556 |
| 2022 | ATL | 65 | 11.08 | #24 | #776 |
| 2023 | BOS | 51 | 5.90 | #71 | #4,234 |
| 2024 | BOS | 54 | 7.03 | #52 | #3,074 |
| 2025 | LAA | 62 | 9.13 | #29 | #1,563 |
| 2026 | DET | 50 | 6.04 | #61 | #4,088 |
★ Best season by Z