Last with Baltimore Orioles · P · No longer on a 40-man roster
David Hernandez has an estimated 10 years and 66 days of major league service time — 10.066 in the notation clubs use, from 1786 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2009 | Baltimore Orioles | 105 | 0.105 | From transactions |
| 2010 | Baltimore Orioles | 172 | 1.105 | From transactions |
| 2011 | Arizona Diamondbacks | 172 | 2.105 | Carried forward |
| 2012 | Arizona Diamondbacks | 172 | 3.105 | Carried forward |
| 2013 | Arizona Diamondbacks | 163 | 4.096 | From transactions |
| 2014 | Arizona Diamondbacks | 172 | 5.096 | From transactions |
| 2015 | Arizona Diamondbacks | 172 | 6.096 | From transactions |
| 2016 | Philadelphia Phillies | 172 | 7.096 | From transactions |
| 2017 | Los Angeles Angels, Arizona Diamondbacks | 172 | 8.096 | From transactions |
| 2018 | Cincinnati Reds | 172 | 9.096 | From transactions |
| 2019 | Cincinnati Reds | 142 | 10.066 | 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.