Athletics · 2B · Arbitration eligible
Donovan Walton has an estimated 3 years and 145 days of major league service time — 3.145 in the notation clubs use, from 661 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2019 | Seattle Mariners | 20 | 0.020 | From transactions |
| 2020 | Seattle Mariners | 17 | 0.037 | From transactions |
| 2021 | Seattle Mariners | 44 | 0.081 | From transactions |
| 2022 | Seattle Mariners, San Francisco Giants | 95 | 1.004 | From transactions |
| 2023 | San Francisco Giants | 172 | 2.004 | From transactions |
| 2024 | San Francisco Giants | 172 | 3.004 | From transactions |
| 2025 | Philadelphia Phillies | 16 | 3.020 | From transactions |
| 2026 | Los Angeles Angels, Oakland Athletics | 125 | 3.145 | 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.