Last with St. Louis Cardinals · 1B · No longer on a 40-man roster
Matt Adams has an estimated 8 years and 83 days of major league service time — 8.083 in the notation clubs use, from 1459 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2012 | St. Louis Cardinals | 33 | 0.033 | From transactions |
| 2013 | St. Louis Cardinals | 172 | 1.033 | From transactions |
| 2014 | St. Louis Cardinals | 172 | 2.033 | From transactions |
| 2015 | St. Louis Cardinals | 172 | 3.033 | From transactions |
| 2016 | St. Louis Cardinals | 172 | 4.033 | From transactions |
| 2017 | St. Louis Cardinals, Atlanta Braves | 172 | 5.033 | From transactions |
| 2018 | Washington Nationals, St. Louis Cardinals | 172 | 6.033 | From transactions |
| 2019 | Washington Nationals | 172 | 7.033 | From transactions |
| 2020 | Atlanta Braves | 105 | 7.138 | From transactions |
| 2021 | Colorado Rockies | 117 | 8.083 | 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.