Chicago White Sox · P · Free agency eligible
Sean Newcomb has an estimated 7 years and 34 days of major league service time — 7.034 in the notation clubs use, from 1238 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2017 | Atlanta Braves | 114 | 0.114 | From transactions |
| 2018 | Atlanta Braves | 172 | 1.114 | From transactions |
| 2019 | Atlanta Braves | 172 | 2.114 | From transactions |
| 2020 | Atlanta Braves | 58 | 3.000 | From transactions |
| 2021 | Atlanta Braves | 124 | 3.124 | From transactions |
| 2022 | Chicago Cubs, Atlanta Braves | 109 | 4.061 | From transactions |
| 2023 | Oakland Athletics | 41 | 4.102 | From transactions |
| 2024 | Oakland Athletics | 104 | 5.034 | From transactions |
| 2025 | Boston Red Sox, Oakland Athletics | 172 | 6.034 | From transactions |
| 2026 | Chicago White Sox | 172 | 7.034 | 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.