Last with Boston Red Sox · LF · No longer on a 40-man roster
Daniel Nava has an estimated 6 years and 24 days of major league service time — 6.024 in the notation clubs use, from 1056 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2010 | Boston Red Sox | 90 | 0.090 | From transactions |
| 2011 | Boston Red Sox | 0 | 0.090 | From transactions |
| 2012 | Boston Red Sox | 147 | 1.065 | From transactions |
| 2013 | Boston Red Sox | 172 | 2.065 | From transactions |
| 2014 | Boston Red Sox | 158 | 3.051 | From transactions |
| 2015 | Boston Red Sox, Tampa Bay Rays | 172 | 4.051 | From transactions |
| 2016 | Los Angeles Angels, Kansas City Royals | 145 | 5.024 | From transactions |
| 2017 | Philadelphia Phillies | 172 | 6.024 | 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.