Last with San Francisco Giants · RF · No longer on a 40-man roster
Austin Slater has an estimated 8 years and 38 days of major league service time — 8.038 in the notation clubs use, from 1414 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2017 | San Francisco Giants | 122 | 0.122 | From transactions |
| 2018 | San Francisco Giants | 107 | 1.057 | From transactions |
| 2019 | San Francisco Giants | 91 | 1.148 | From transactions |
| 2020 | San Francisco Giants | 172 | 2.148 | From transactions |
| 2021 | San Francisco Giants | 172 | 3.148 | From transactions |
| 2022 | San Francisco Giants | 172 | 4.148 | From transactions |
| 2023 | San Francisco Giants | 172 | 5.148 | From transactions |
| 2024 | Baltimore Orioles, Cincinnati Reds, San Francisco Giants | 172 | 6.148 | From transactions |
| 2025 | Chicago White Sox, New York Yankees | 172 | 7.148 | From transactions |
| 2026 | New York Mets, Tampa Bay Rays, Miami Marlins | 62 | 8.038 | 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.