Last with Milwaukee Brewers · P · No longer on a 40-man roster
Jeremy Jeffress has an estimated 7 years and 81 days of major league service time — 7.081 in the notation clubs use, from 1285 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2010 | Milwaukee Brewers | 33 | 0.033 | From transactions |
| 2011 | Kansas City Royals | 49 | 0.082 | From transactions |
| 2012 | Kansas City Royals | 60 | 0.142 | From transactions |
| 2013 | Toronto Blue Jays | 34 | 1.004 | From transactions |
| 2014 | Toronto Blue Jays, Milwaukee Brewers | 84 | 1.088 | From transactions |
| 2015 | Milwaukee Brewers | 172 | 2.088 | Carried forward |
| 2016 | Texas Rangers, Milwaukee Brewers | 172 | 3.088 | From transactions |
| 2017 | Texas Rangers, Milwaukee Brewers | 172 | 4.088 | From transactions |
| 2018 | Milwaukee Brewers | 172 | 5.088 | Carried forward |
| 2019 | Milwaukee Brewers | 165 | 6.081 | From transactions |
| 2020 | Chicago Cubs | 172 | 7.081 | From transactions |
| 2021 | Washington Nationals | 0 | 7.081 | 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.