New York Yankees · P · Free agency eligible
Paul Blackburn has an estimated 7 years and 16 days of major league service time — 7.016 in the notation clubs use, from 1220 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2017 | Oakland Athletics | 93 | 0.093 | From transactions |
| 2018 | Oakland Athletics | 172 | 1.093 | From transactions |
| 2019 | Oakland Athletics | 31 | 1.124 | From transactions |
| 2020 | Oakland Athletics | 17 | 1.141 | From transactions |
| 2021 | Oakland Athletics | 47 | 2.016 | From transactions |
| 2022 | Oakland Athletics | 172 | 3.016 | From transactions |
| 2023 | Oakland Athletics | 172 | 4.016 | From transactions |
| 2024 | New York Mets, Oakland Athletics | 172 | 5.016 | From transactions |
| 2025 | New York Mets, New York Yankees | 172 | 6.016 | From transactions |
| 2026 | New York Yankees | 172 | 7.016 | 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.