Last with St. Louis Cardinals · LF · No longer on a 40-man roster
Dylan Carlson has an estimated 5 years and 77 days of major league service time — 5.077 in the notation clubs use, from 937 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2020 | St. Louis Cardinals | 94 | 0.094 | From transactions |
| 2021 | St. Louis Cardinals | 172 | 1.094 | From transactions |
| 2022 | St. Louis Cardinals | 172 | 2.094 | From transactions |
| 2023 | St. Louis Cardinals | 172 | 3.094 | From transactions |
| 2024 | St. Louis Cardinals, Tampa Bay Rays | 172 | 4.094 | From transactions |
| 2025 | Baltimore Orioles | 139 | 5.061 | From transactions |
| 2026 | Chicago Cubs | 16 | 5.077 | 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.