New York Yankees · 3B · Free agency eligible
Amed Rosario has an estimated 9 years and 62 days of major league service time — 9.062 in the notation clubs use, from 1610 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2017 | New York Mets | 62 | 0.062 | From transactions |
| 2018 | New York Mets | 172 | 1.062 | Carried forward |
| 2019 | New York Mets | 172 | 2.062 | Carried forward |
| 2020 | New York Mets | 172 | 3.062 | Carried forward |
| 2021 | Cleveland Indians | 172 | 4.062 | From transactions |
| 2022 | Cleveland Indians | 172 | 5.062 | Carried forward |
| 2023 | Cleveland Indians, Los Angeles Dodgers | 172 | 6.062 | From transactions |
| 2024 | Cincinnati Reds, Los Angeles Dodgers, Tampa Bay Rays | 172 | 7.062 | From transactions |
| 2025 | Washington Nationals, New York Yankees | 172 | 8.062 | From transactions |
| 2026 | New York Yankees | 172 | 9.062 | 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.