Keith Cooper Jr. is listed at DE on the Miami Dolphins roster checked September 20, 2026. The official source lists the roster status as Active roster (ACT).
The details below are dated roster facts. Roster status, practice participation, and game-day availability are different; this profile does not turn one into another.
Selected report: Miami Dolphins · Practice squad · Season 2026
| Observation window | Record date | Team | Roster status | Effective date | Record |
|---|---|---|---|---|---|
| Season 2026 · Week 4 | Oct 4, 2026, 9:11 am EDT Updated | Miami Dolphins | Practice squad | Not supplied | Weekly roster |
| Season 2026 · Week 3 | Oct 4, 2026, 9:11 am EDT Updated | Miami Dolphins | Active roster | Not supplied | Weekly roster |
| Season 2026 · Week 2 | Oct 4, 2026, 9:11 am EDT Updated | Miami Dolphins | Active roster | Not supplied | Weekly roster |
| Season 2026 · Week 1 | Oct 4, 2026, 9:11 am EDT Updated | Miami Dolphins | Active roster | Not supplied | Weekly roster |
| Dated observation | Sep 20, 2026, 7:00 am EDT Observed | Miami Dolphins | Active roster | Not supplied | Dated roster |
Weekly rows describe the supplied week, not a dated transaction. Observed dates show when a record was checked, not when a contract or roster move took effect. Conflicting records remain separate. Only retained observations are shown; game-day status belongs to the availability report.
Line judge Jeff Seeman will sit two games and referee Adrian Hill one after on-camera confrontations with players during Week 4.
Zac Taylor said Chase is still in the concussion protocol and Higgins is day-to-day with an adductor problem, with both to be re-evaluated on Wednesday before the last game ahead of Cincinnati's bye.
The veteran receiver's agent expects a signing within days, a year after a severe knee injury, and Kansas City is among the teams in contact after losing two wideouts in Las Vegas.
