Last with Cincinnati Reds · SS · No longer on a 40-man roster
Zack Cozart has an estimated 8 years and 84 days of major league service time — 8.084 in the notation clubs use, from 1460 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2011 | Cincinnati Reds | 84 | 0.084 | From transactions |
| 2012 | Cincinnati Reds | 172 | 1.084 | Carried forward |
| 2013 | Cincinnati Reds | 172 | 2.084 | Carried forward |
| 2014 | Cincinnati Reds | 172 | 3.084 | Carried forward |
| 2015 | Cincinnati Reds | 172 | 4.084 | From transactions |
| 2016 | Cincinnati Reds | 172 | 5.084 | From transactions |
| 2017 | Cincinnati Reds | 172 | 6.084 | From transactions |
| 2018 | Los Angeles Angels | 172 | 7.084 | From transactions |
| 2019 | Los Angeles Angels | 172 | 8.084 | 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.