Last with San Diego Padres · P · No longer on a 40-man roster
Javy Guerra has an estimated 2 years and 154 days of major league service time — 2.154 in the notation clubs use, from 498 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2018 | San Diego Padres | 24 | 0.024 | From transactions |
| 2019 | San Diego Padres | 31 | 0.055 | From transactions |
| 2020 | San Diego Padres | 172 | 1.055 | From transactions |
| 2021 | San Diego Padres | 172 | 2.055 | From transactions |
| 2022 | San Diego Padres, Tampa Bay Rays | 48 | 2.103 | From transactions |
| 2023 | Tampa Bay Rays, Milwaukee Brewers | 51 | 2.154 | 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.