Last with Seattle Mariners · P · No longer on a 40-man roster
Adrian Sampson has an estimated 2 years and 120 days of major league service time — 2.120 in the notation clubs use, from 464 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2016 | Seattle Mariners | 107 | 0.107 | From transactions |
| 2017 | Seattle Mariners | 0 | 0.107 | Carried forward |
| 2018 | Texas Rangers | 28 | 0.135 | From transactions |
| 2019 | Texas Rangers | 172 | 1.135 | From transactions |
| 2020 | Texas Rangers | 0 | 1.135 | Carried forward |
| 2021 | Chicago Cubs | 47 | 2.010 | From transactions |
| 2022 | Chicago Cubs | 110 | 2.120 | 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.