Last with Los Angeles Angels · P · No longer on a 40-man roster
Keynan Middleton has an estimated 7 years and 26 days of major league service time — 7.026 in the notation clubs use, from 1230 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2017 | Los Angeles Angels | 150 | 0.150 | From transactions |
| 2018 | Los Angeles Angels | 172 | 1.150 | From transactions |
| 2019 | Los Angeles Angels | 172 | 2.150 | From transactions |
| 2020 | Los Angeles Angels | 108 | 3.086 | From transactions |
| 2021 | Seattle Mariners | 133 | 4.047 | From transactions |
| 2022 | Arizona Diamondbacks | 151 | 5.026 | From transactions |
| 2023 | Chicago White Sox, New York Yankees | 172 | 6.026 | From transactions |
| 2024 | St. Louis Cardinals | 172 | 7.026 | 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.