Last with New York Yankees · DH · No longer on a 40-man roster
Rob Refsnyder has an estimated 8 years and 10 days of major league service time — 8.010 in the notation clubs use, from 1386 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2015 | New York Yankees | 42 | 0.042 | From transactions |
| 2016 | New York Yankees | 113 | 0.155 | From transactions |
| 2017 | Toronto Blue Jays, New York Yankees | 112 | 1.095 | From transactions |
| 2018 | Tampa Bay Rays | 82 | 2.005 | From transactions |
| 2019 | Cincinnati Reds, Texas Rangers | 0 | 2.005 | From transactions |
| 2020 | Texas Rangers | 89 | 2.094 | From transactions |
| 2021 | Minnesota Twins | 172 | 3.094 | From transactions |
| 2022 | Boston Red Sox | 128 | 4.050 | From transactions |
| 2023 | Boston Red Sox | 172 | 5.050 | Carried forward |
| 2024 | Boston Red Sox | 172 | 6.050 | From transactions |
| 2025 | Boston Red Sox | 172 | 7.050 | From transactions |
| 2026 | Seattle Mariners | 132 | 8.010 | 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.