Last with Houston Astros · DH · No longer on a 40-man roster
J.D. Martinez has an estimated 13 years and 33 days of major league service time — 13.033 in the notation clubs use, from 2269 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2011 | Houston Astros | 61 | 0.061 | From transactions |
| 2012 | Houston Astros | 165 | 1.054 | From transactions |
| 2013 | Houston Astros | 172 | 2.054 | From transactions |
| 2014 | Detroit Tigers | 161 | 3.043 | From transactions |
| 2015 | Detroit Tigers | 172 | 4.043 | Carried forward |
| 2016 | Detroit Tigers | 172 | 5.043 | From transactions |
| 2017 | Arizona Diamondbacks, Detroit Tigers | 172 | 6.043 | From transactions |
| 2018 | Boston Red Sox | 172 | 7.043 | From transactions |
| 2019 | Boston Red Sox | 172 | 8.043 | Carried forward |
| 2020 | Boston Red Sox | 172 | 9.043 | Carried forward |
| 2021 | Boston Red Sox | 172 | 10.043 | From transactions |
| 2022 | Boston Red Sox | 172 | 11.043 | From transactions |
| 2023 | Los Angeles Dodgers | 172 | 12.043 | From transactions |
| 2024 | New York Mets | 162 | 13.033 | 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.