Last with Baltimore Orioles · P · No longer on a 40-man roster
Jim Johnson has an estimated 12 years and 45 days of major league service time — 12.045 in the notation clubs use, from 2109 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2006 | Baltimore Orioles | 66 | 0.066 | From transactions |
| 2007 | Baltimore Orioles | 172 | 1.066 | Carried forward |
| 2008 | Baltimore Orioles | 172 | 2.066 | Carried forward |
| 2009 | Baltimore Orioles | 172 | 3.066 | Carried forward |
| 2010 | Baltimore Orioles | 156 | 4.050 | From transactions |
| 2011 | Baltimore Orioles | 172 | 5.050 | Carried forward |
| 2012 | Baltimore Orioles | 172 | 6.050 | Carried forward |
| 2013 | Baltimore Orioles | 172 | 7.050 | From transactions |
| 2014 | Detroit Tigers, Oakland Athletics | 167 | 8.045 | From transactions |
| 2015 | Los Angeles Dodgers, Atlanta Braves | 172 | 9.045 | From transactions |
| 2016 | Atlanta Braves | 172 | 10.045 | From transactions |
| 2017 | Atlanta Braves | 172 | 11.045 | From transactions |
| 2018 | Los Angeles Angels | 172 | 12.045 | 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.