Last with San Francisco Giants · 1B · No longer on a 40-man roster
Brandon Belt has an estimated 12 years and 137 days of major league service time — 12.137 in the notation clubs use, from 2201 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2011 | San Francisco Giants | 137 | 0.137 | From transactions |
| 2012 | San Francisco Giants | 172 | 1.137 | Carried forward |
| 2013 | San Francisco Giants | 172 | 2.137 | Carried forward |
| 2014 | San Francisco Giants | 172 | 3.137 | From transactions |
| 2015 | San Francisco Giants | 172 | 4.137 | Carried forward |
| 2016 | San Francisco Giants | 172 | 5.137 | Carried forward |
| 2017 | San Francisco Giants | 172 | 6.137 | From transactions |
| 2018 | San Francisco Giants | 172 | 7.137 | From transactions |
| 2019 | San Francisco Giants | 172 | 8.137 | Carried forward |
| 2020 | San Francisco Giants | 172 | 9.137 | From transactions |
| 2021 | San Francisco Giants | 172 | 10.137 | From transactions |
| 2022 | San Francisco Giants | 172 | 11.137 | From transactions |
| 2023 | Toronto Blue Jays | 172 | 12.137 | 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.