Last with San Francisco Giants · P · No longer on a 40-man roster
Heath Hembree 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 |
|---|---|---|---|---|
| 2013 | San Francisco Giants | 28 | 0.028 | From transactions |
| 2014 | Boston Red Sox | 20 | 0.048 | From transactions |
| 2015 | Boston Red Sox | 98 | 0.146 | From transactions |
| 2016 | Boston Red Sox | 133 | 1.107 | From transactions |
| 2017 | Boston Red Sox | 172 | 2.107 | From transactions |
| 2018 | Boston Red Sox | 172 | 3.107 | From transactions |
| 2019 | Boston Red Sox | 172 | 4.107 | From transactions |
| 2020 | Boston Red Sox, Philadelphia Phillies | 172 | 5.107 | From transactions |
| 2021 | Cincinnati Reds, New York Mets | 172 | 6.107 | From transactions |
| 2022 | Los Angeles Dodgers, Pittsburgh Pirates | 90 | 7.025 | From transactions |
| 2023 | Tampa Bay Rays | 1 | 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.