Last with San Diego Padres · P · No longer on a 40-man roster
Casey Kelly has an estimated 2 years and 135 days of major league service time — 2.135 in the notation clubs use, from 479 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2012 | San Diego Padres | 38 | 0.038 | From transactions |
| 2013 | San Diego Padres | 172 | 1.038 | From transactions |
| 2014 | San Diego Padres | 172 | 2.038 | From transactions |
| 2015 | San Diego Padres | 21 | 2.059 | From transactions |
| 2016 | Atlanta Braves | 21 | 2.080 | From transactions |
| 2017 | Chicago Cubs, San Francisco Giants | 0 | 2.080 | From transactions |
| 2018 | San Francisco Giants | 43 | 2.123 | From transactions |
| 2019 | San Francisco Giants | 0 | 2.123 | Carried forward |
| 2020 | San Francisco Giants | 0 | 2.123 | Carried forward |
| 2021 | San Francisco Giants | 0 | 2.123 | Carried forward |
| 2022 | San Francisco Giants | 0 | 2.123 | Carried forward |
| 2023 | San Francisco Giants | 0 | 2.123 | Carried forward |
| 2024 | Cincinnati Reds | 5 | 2.128 | From transactions |
| 2025 | Arizona Diamondbacks | 7 | 2.135 | From transactions |
172 days credit a full year, so a season adds at most 1.000 no matter how long a player is on a roster. 3.000 years reaches salary arbitration and 6.000 reaches free agency —
what every threshold unlocks.
This figure is an estimate reconstructed from public roster
transaction records. It is not an official MLB or MLBPA figure — those are
not published. See the
methodology.
Last updated 2026-10-12.
Independent project, not affiliated with or endorsed by Major League
Baseball or the MLBPA.