Last with San Diego Padres · P · No longer on a 40-man roster
Tommy Layne has an estimated 3 years and 42 days of major league service time — 3.042 in the notation clubs use, from 558 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2012 | San Diego Padres | 51 | 0.051 | From transactions |
| 2013 | San Diego Padres | 50 | 0.101 | From transactions |
| 2014 | Boston Red Sox | 60 | 0.161 | From transactions |
| 2015 | Boston Red Sox | 155 | 1.144 | From transactions |
| 2016 | Boston Red Sox, New York Yankees | 172 | 2.144 | From transactions |
| 2017 | New York Yankees | 70 | 3.042 | 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.