Last with Washington Nationals · C · No longer on a 40-man roster
Sandy León has an estimated 9 years and 8 days of major league service time — 9.008 in the notation clubs use, from 1556 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2012 | Washington Nationals | 101 | 0.101 | From transactions |
| 2013 | Washington Nationals | 30 | 0.131 | From transactions |
| 2014 | Washington Nationals | 93 | 1.052 | From transactions |
| 2015 | Boston Red Sox | 140 | 2.020 | From transactions |
| 2016 | Boston Red Sox | 120 | 2.140 | From transactions |
| 2017 | Boston Red Sox | 172 | 3.140 | Carried forward |
| 2018 | Boston Red Sox | 172 | 4.140 | Carried forward |
| 2019 | Boston Red Sox | 172 | 5.140 | From transactions |
| 2020 | Cleveland Indians | 172 | 6.140 | From transactions |
| 2021 | Miami Marlins | 172 | 7.140 | From transactions |
| 2022 | Cleveland Indians, Minnesota Twins | 64 | 8.032 | From transactions |
| 2023 | Texas Rangers | 65 | 8.097 | From transactions |
| 2024 | Kansas City Royals, Atlanta Braves | 0 | 8.097 | From transactions |
| 2025 | Atlanta Braves | 46 | 8.143 | From transactions |
| 2026 | Atlanta Braves | 37 | 9.008 | 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.