Last with Oakland Athletics · P · No longer on a 40-man roster
Vin Mazzaro has an estimated 3 years and 90 days of major league service time — 3.090 in the notation clubs use, from 606 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2009 | Oakland Athletics | 127 | 0.127 | From transactions |
| 2010 | Oakland Athletics | 130 | 1.085 | From transactions |
| 2011 | Kansas City Royals | 27 | 1.112 | From transactions |
| 2012 | Kansas City Royals | 85 | 2.025 | From transactions |
| 2013 | Pittsburgh Pirates | 168 | 3.021 | From transactions |
| 2014 | Pittsburgh Pirates | 30 | 3.051 | From transactions |
| 2015 | Miami Marlins | 33 | 3.084 | From transactions |
| 2016 | San Francisco Giants | 6 | 3.090 | 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.