Last with San Diego Padres · P · No longer on a 40-man roster
Miles Mikolas has an estimated 9 years and 170 days of major league service time — 9.170 in the notation clubs use, from 1718 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2012 | San Diego Padres | 102 | 0.102 | From transactions |
| 2013 | San Diego Padres | 6 | 0.108 | From transactions |
| 2014 | Texas Rangers | 94 | 1.030 | From transactions |
| 2015 | Texas Rangers | 0 | 1.030 | Carried forward |
| 2016 | Texas Rangers | 0 | 1.030 | Carried forward |
| 2017 | St. Louis Cardinals | 0 | 1.030 | From transactions |
| 2018 | St. Louis Cardinals | 172 | 2.030 | From transactions |
| 2019 | St. Louis Cardinals | 172 | 3.030 | Carried forward |
| 2020 | St. Louis Cardinals | 172 | 4.030 | From transactions |
| 2021 | St. Louis Cardinals | 172 | 5.030 | From transactions |
| 2022 | St. Louis Cardinals | 172 | 6.030 | Carried forward |
| 2023 | St. Louis Cardinals | 172 | 7.030 | From transactions |
| 2024 | St. Louis Cardinals | 172 | 8.030 | Carried forward |
| 2025 | St. Louis Cardinals | 172 | 9.030 | From transactions |
| 2026 | Washington Nationals | 140 | 9.170 | 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.