Last with San Diego Padres · P · No longer on a 40-man roster
Jesse Hahn has an estimated 7 years and 85 days of major league service time — 7.085 in the notation clubs use, from 1289 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2014 | San Diego Padres | 84 | 0.084 | From transactions |
| 2015 | Oakland Athletics | 172 | 1.084 | From transactions |
| 2016 | Oakland Athletics | 61 | 1.145 | From transactions |
| 2017 | Oakland Athletics | 88 | 2.061 | From transactions |
| 2018 | Kansas City Royals | 172 | 3.061 | From transactions |
| 2019 | Kansas City Royals | 172 | 4.061 | From transactions |
| 2020 | Kansas City Royals | 172 | 5.061 | From transactions |
| 2021 | Kansas City Royals | 172 | 6.061 | From transactions |
| 2022 | Kansas City Royals | 0 | 6.061 | Carried forward |
| 2023 | Kansas City Royals | 0 | 6.061 | Carried forward |
| 2024 | Los Angeles Dodgers, Seattle Mariners | 172 | 7.061 | From transactions |
| 2025 | Seattle Mariners | 24 | 7.085 | 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.