Cleveland Guardians · P · Free agency eligible
Shawn Armstrong has an estimated 8 years and 97 days of major league service time — 8.097 in the notation clubs use, from 1473 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2015 | Cleveland Indians | 41 | 0.041 | From transactions |
| 2016 | Cleveland Indians | 32 | 0.073 | From transactions |
| 2017 | Cleveland Indians | 90 | 0.163 | From transactions |
| 2018 | Seattle Mariners | 35 | 1.026 | From transactions |
| 2019 | Baltimore Orioles, Seattle Mariners | 172 | 2.026 | From transactions |
| 2020 | Baltimore Orioles | 172 | 3.026 | From transactions |
| 2021 | Baltimore Orioles, Tampa Bay Rays | 90 | 3.116 | From transactions |
| 2022 | Tampa Bay Rays, Miami Marlins | 153 | 4.097 | From transactions |
| 2023 | Tampa Bay Rays | 172 | 5.097 | From transactions |
| 2024 | Chicago Cubs, St. Louis Cardinals, Tampa Bay Rays | 172 | 6.097 | From transactions |
| 2025 | Texas Rangers | 172 | 7.097 | From transactions |
| 2026 | Cleveland Indians | 172 | 8.097 | 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.