Copeland announced he was retiring Monday, Michael Rothstein of ESPN.com reports.
Baltimore activated Copeland from its practice squad ahead of Sunday's game versus Cincinnati, Jeff Zrebiec of The Athletic reports.
Copeland reverted to the Ravens' practice squad Monday, per the NFL's official transaction log.
Copeland (knee) worked out with the Ravens on Wednesday, Matt Lombardo of Heavy On Sports reports.
Copeland underwent postseason knee surgery according to his Instagram, Michael Rothstein of ESPN.com reports.
Copeland (illness) has been activated from the reserve/COVID-19 list Saturday, according to Tori McElhaney of the Falcons' official site.
Copeland (illness) was placed on the reserve/COVID-19 list Monday and tested positive for the virus, Tom Pelissero of NFL Network reports.
The Falcons signed Copeland to their active roster Monday.
Copeland (pectoral) signed a one-year deal with the Falcons on Friday, Adam Schefter of ESPN reports.