Last with Detroit Tigers · RF · No longer on a 40-man roster
Nick Castellanos has an estimated 12 years and 100 days of major league service time — 12.100 in the notation clubs use, from 2164 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2013 | Detroit Tigers | 30 | 0.030 | From transactions |
| 2014 | Detroit Tigers | 172 | 1.030 | Carried forward |
| 2015 | Detroit Tigers | 172 | 2.030 | Carried forward |
| 2016 | Detroit Tigers | 172 | 3.030 | From transactions |
| 2017 | Detroit Tigers | 172 | 4.030 | Carried forward |
| 2018 | Detroit Tigers | 172 | 5.030 | Carried forward |
| 2019 | Chicago Cubs, Detroit Tigers | 172 | 6.030 | From transactions |
| 2020 | Cincinnati Reds | 172 | 7.030 | From transactions |
| 2021 | Cincinnati Reds | 172 | 8.030 | From transactions |
| 2022 | Philadelphia Phillies | 172 | 9.030 | From transactions |
| 2023 | Philadelphia Phillies | 172 | 10.030 | Carried forward |
| 2024 | Philadelphia Phillies | 172 | 11.030 | Carried forward |
| 2025 | Philadelphia Phillies | 172 | 12.030 | From transactions |
| 2026 | San Diego Padres | 70 | 12.100 | 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.