Last with Philadelphia Phillies · 2B · No longer on a 40-man roster
César Hernández has an estimated 8 years and 161 days of major league service time — 8.161 in the notation clubs use, from 1537 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2013 | Philadelphia Phillies | 45 | 0.045 | From transactions |
| 2014 | Philadelphia Phillies | 116 | 0.161 | From transactions |
| 2015 | Philadelphia Phillies | 172 | 1.161 | From transactions |
| 2016 | Philadelphia Phillies | 172 | 2.161 | Carried forward |
| 2017 | Philadelphia Phillies | 172 | 3.161 | From transactions |
| 2018 | Philadelphia Phillies | 172 | 4.161 | Carried forward |
| 2019 | Philadelphia Phillies | 172 | 5.161 | From transactions |
| 2020 | Cleveland Indians | 172 | 6.161 | From transactions |
| 2021 | Cleveland Indians, Chicago White Sox | 172 | 7.161 | From transactions |
| 2022 | Washington Nationals | 172 | 8.161 | 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.