Last with Chicago White Sox · P · No longer on a 40-man roster
Dane Dunning has an estimated 4 years and 133 days of major league service time — 4.133 in the notation clubs use, from 821 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2020 | Chicago White Sox | 83 | 0.083 | From transactions |
| 2021 | Texas Rangers | 172 | 1.083 | From transactions |
| 2022 | Texas Rangers | 172 | 2.083 | From transactions |
| 2023 | Texas Rangers | 172 | 3.083 | From transactions |
| 2024 | Texas Rangers | 172 | 4.083 | From transactions |
| 2025 | Texas Rangers, Atlanta Braves | 50 | 4.133 | 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.