Last with Seattle Mariners · C · No longer on a 40-man roster
Adam Moore has an estimated 2 years and 149 days of major league service time — 2.149 in the notation clubs use, from 493 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2009 | Seattle Mariners | 24 | 0.024 | From transactions |
| 2010 | Seattle Mariners | 144 | 0.168 | From transactions |
| 2011 | Seattle Mariners | 172 | 1.168 | From transactions |
| 2012 | Kansas City Royals | 32 | 2.028 | From transactions |
| 2013 | Kansas City Royals | 9 | 2.037 | From transactions |
| 2014 | San Diego Padres | 27 | 2.064 | From transactions |
| 2015 | Cleveland Indians | 12 | 2.076 | From transactions |
| 2016 | Cleveland Indians | 35 | 2.111 | From transactions |
| 2017 | Cleveland Indians | 0 | 2.111 | From transactions |
| 2018 | Tampa Bay Rays | 38 | 2.149 | 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.