Last with Tampa Bay Rays · P · No longer on a 40-man roster
Adam Kolarek has an estimated 3 years and 33 days of major league service time — 3.033 in the notation clubs use, from 549 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2017 | Tampa Bay Rays | 34 | 0.034 | From transactions |
| 2018 | Tampa Bay Rays | 78 | 0.112 | From transactions |
| 2019 | Los Angeles Dodgers, Tampa Bay Rays | 172 | 1.112 | From transactions |
| 2020 | Los Angeles Dodgers | 161 | 2.101 | From transactions |
| 2021 | Oakland Athletics | 44 | 2.145 | From transactions |
| 2022 | Oakland Athletics | 49 | 3.022 | From transactions |
| 2023 | Los Angeles Dodgers, New York Mets | 11 | 3.033 | 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.