Last with Miami Marlins · 2B · No longer on a 40-man roster
Derek Dietrich has an estimated 6 years and 120 days of major league service time — 6.120 in the notation clubs use, from 1152 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2013 | Miami Marlins | 77 | 0.077 | From transactions |
| 2014 | Miami Marlins | 139 | 1.044 | From transactions |
| 2015 | Miami Marlins | 115 | 1.159 | From transactions |
| 2016 | Miami Marlins | 172 | 2.159 | From transactions |
| 2017 | Miami Marlins | 172 | 3.159 | Carried forward |
| 2018 | Miami Marlins | 172 | 4.159 | From transactions |
| 2019 | Cincinnati Reds | 172 | 5.159 | From transactions |
| 2020 | Texas Rangers | 133 | 6.120 | 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.