Last with Chicago Cubs · P · No longer on a 40-man roster
Zac Rosscup has an estimated 5 years and 167 days of major league service time — 5.167 in the notation clubs use, from 1027 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2013 | Chicago Cubs | 28 | 0.028 | From transactions |
| 2014 | Chicago Cubs | 95 | 0.123 | From transactions |
| 2015 | Chicago Cubs | 154 | 1.105 | From transactions |
| 2016 | Chicago Cubs | 172 | 2.105 | From transactions |
| 2017 | Chicago Cubs, Colorado Rockies | 107 | 3.040 | From transactions |
| 2018 | Los Angeles Dodgers | 172 | 4.040 | From transactions |
| 2019 | Los Angeles Dodgers, Seattle Mariners, Toronto Blue Jays | 81 | 4.121 | From transactions |
| 2020 | Colorado Rockies | 92 | 5.041 | From transactions |
| 2021 | Colorado Rockies | 126 | 5.167 | 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.