Last with Washington Nationals · P · No longer on a 40-man roster
Joe Ross has an estimated 10 years and 31 days of major league service time — 10.031 in the notation clubs use, from 1751 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2015 | Washington Nationals | 93 | 0.093 | From transactions |
| 2016 | Washington Nationals | 172 | 1.093 | From transactions |
| 2017 | Washington Nationals | 144 | 2.065 | From transactions |
| 2018 | Washington Nationals | 172 | 3.065 | From transactions |
| 2019 | Washington Nationals | 124 | 4.017 | From transactions |
| 2020 | Washington Nationals | 172 | 5.017 | From transactions |
| 2021 | Washington Nationals | 172 | 6.017 | From transactions |
| 2022 | Washington Nationals | 172 | 7.017 | From transactions |
| 2023 | San Francisco Giants, Milwaukee Brewers | 172 | 8.017 | From transactions |
| 2024 | Milwaukee Brewers | 172 | 9.017 | From transactions |
| 2025 | Philadelphia Phillies | 161 | 10.006 | From transactions |
| 2026 | Arizona Diamondbacks, Texas Rangers | 25 | 10.031 | 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.