Last with Cincinnati Reds · SS · No longer on a 40-man roster
Adam Rosales has an estimated 8 years and 30 days of major league service time — 8.030 in the notation clubs use, from 1406 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2008 | Cincinnati Reds | 53 | 0.053 | Carried forward |
| 2009 | Cincinnati Reds | 170 | 1.051 | From transactions |
| 2010 | Oakland Athletics | 172 | 2.051 | From transactions |
| 2011 | Oakland Athletics | 145 | 3.024 | From transactions |
| 2012 | Oakland Athletics | 98 | 3.122 | From transactions |
| 2013 | Oakland Athletics, Texas Rangers | 161 | 4.111 | From transactions |
| 2014 | Texas Rangers | 99 | 5.038 | From transactions |
| 2015 | Texas Rangers | 136 | 6.002 | From transactions |
| 2016 | San Diego Padres | 172 | 7.002 | From transactions |
| 2017 | Arizona Diamondbacks, Oakland Athletics | 172 | 8.002 | From transactions |
| 2018 | Cleveland Indians | 28 | 8.030 | 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.