Last with Los Angeles Dodgers · P · No longer on a 40-man roster
Javy Guerra has an estimated 6 years and 89 days of major league service time — 6.089 in the notation clubs use, from 1121 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2011 | Los Angeles Dodgers | 137 | 0.137 | From transactions |
| 2012 | Los Angeles Dodgers | 172 | 1.137 | From transactions |
| 2013 | Los Angeles Dodgers | 31 | 1.168 | From transactions |
| 2014 | Chicago White Sox | 134 | 2.130 | From transactions |
| 2015 | Chicago White Sox | 31 | 2.161 | From transactions |
| 2016 | Los Angeles Angels | 13 | 3.002 | From transactions |
| 2017 | Miami Marlins | 45 | 3.047 | From transactions |
| 2018 | Miami Marlins | 85 | 3.132 | From transactions |
| 2019 | Washington Nationals, Toronto Blue Jays | 158 | 4.118 | From transactions |
| 2020 | Washington Nationals | 172 | 5.118 | From transactions |
| 2021 | Washington Nationals | 143 | 6.089 | 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.