New York Mets · P · Arbitration eligible
Cionel Pérez has an estimated 5 years and 129 days of major league service time — 5.129 in the notation clubs use, from 989 days credited on a major league roster.
| Season | Club | Days | Running total | How this season is known |
|---|---|---|---|---|
| 2018 | Houston Astros | 68 | 0.068 | From transactions |
| 2019 | Houston Astros | 40 | 0.108 | From transactions |
| 2020 | Houston Astros | 72 | 1.008 | From transactions |
| 2021 | Cincinnati Reds | 67 | 1.075 | From transactions |
| 2022 | Baltimore Orioles | 172 | 2.075 | Carried forward |
| 2023 | Baltimore Orioles | 172 | 3.075 | From transactions |
| 2024 | Baltimore Orioles | 172 | 4.075 | From transactions |
| 2025 | Baltimore Orioles | 67 | 4.142 | From transactions |
| 2026 | Washington Nationals, New York Mets | 159 | 5.129 | 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.