Chicago Cubs · P · Free agency eligible
Shelby Miller has an estimated 12 years and 12 days of major league service time — 12.012 in the notation clubs use, from 2076 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2012 | St. Louis Cardinals | 30 | 0.030 | From transactions |
| 2013 | St. Louis Cardinals | 172 | 1.030 | Carried forward |
| 2014 | St. Louis Cardinals | 172 | 2.030 | From transactions |
| 2015 | Atlanta Braves | 172 | 3.030 | From transactions |
| 2016 | Arizona Diamondbacks | 135 | 3.165 | From transactions |
| 2017 | Arizona Diamondbacks | 172 | 4.165 | From transactions |
| 2018 | Arizona Diamondbacks | 172 | 5.165 | From transactions |
| 2019 | Texas Rangers | 103 | 6.096 | From transactions |
| 2020 | Milwaukee Brewers | 0 | 6.096 | From transactions |
| 2021 | Chicago Cubs, Pittsburgh Pirates | 88 | 7.012 | From transactions |
| 2022 | San Francisco Giants | 172 | 8.012 | From transactions |
| 2023 | Los Angeles Dodgers | 172 | 9.012 | From transactions |
| 2024 | Detroit Tigers | 172 | 10.012 | From transactions |
| 2025 | Arizona Diamondbacks, Milwaukee Brewers | 172 | 11.012 | From transactions |
| 2026 | Chicago Cubs | 172 | 12.012 | 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.