Last with Texas Rangers · P · No longer on a 40-man roster
Luke Jackson has an estimated 9 years and 5 days of major league service time — 9.005 in the notation clubs use, from 1553 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2015 | Texas Rangers | 39 | 0.039 | From transactions |
| 2016 | Texas Rangers | 45 | 0.084 | From transactions |
| 2017 | Atlanta Braves | 141 | 1.053 | From transactions |
| 2018 | Atlanta Braves | 128 | 2.009 | From transactions |
| 2019 | Atlanta Braves | 172 | 3.009 | Carried forward |
| 2020 | Atlanta Braves | 172 | 4.009 | From transactions |
| 2021 | Atlanta Braves | 172 | 5.009 | From transactions |
| 2022 | Atlanta Braves | 172 | 6.009 | From transactions |
| 2023 | San Francisco Giants | 172 | 7.009 | From transactions |
| 2024 | San Francisco Giants, Atlanta Braves | 172 | 8.009 | From transactions |
| 2025 | Detroit Tigers, Seattle Mariners, Texas Rangers | 168 | 9.005 | 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.