Last with St. Louis Cardinals · P · No longer on a 40-man roster
Mike Mayers has an estimated 4 years and 154 days of major league service time — 4.154 in the notation clubs use, from 842 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2016 | St. Louis Cardinals | 28 | 0.028 | From transactions |
| 2017 | St. Louis Cardinals | 10 | 0.038 | From transactions |
| 2018 | St. Louis Cardinals | 161 | 1.027 | From transactions |
| 2019 | St. Louis Cardinals | 166 | 2.021 | From transactions |
| 2020 | Los Angeles Angels | 172 | 3.021 | From transactions |
| 2021 | Los Angeles Angels | 172 | 4.021 | From transactions |
| 2022 | Los Angeles Angels | 101 | 4.122 | From transactions |
| 2023 | Kansas City Royals | 32 | 4.154 | 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.