Last with Seattle Mariners · P · No longer on a 40-man roster
Dan Altavilla has an estimated 7 years and 159 days of major league service time — 7.159 in the notation clubs use, from 1363 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2016 | Seattle Mariners | 37 | 0.037 | From transactions |
| 2017 | Seattle Mariners | 111 | 0.148 | From transactions |
| 2018 | Seattle Mariners | 150 | 1.126 | From transactions |
| 2019 | Seattle Mariners | 105 | 2.059 | From transactions |
| 2020 | San Diego Padres, Seattle Mariners | 172 | 3.059 | From transactions |
| 2021 | San Diego Padres | 172 | 4.059 | From transactions |
| 2022 | Boston Red Sox | 172 | 5.059 | From transactions |
| 2023 | Boston Red Sox, Kansas City Royals | 172 | 6.059 | From transactions |
| 2024 | Kansas City Royals | 169 | 7.056 | From transactions |
| 2025 | Chicago White Sox | 103 | 7.159 | 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.