From an article on NFL com this morning; link below with a pdf of the protocol.

Included in the updated protocols are changes to how fully vaccinated players can "test out" of COVID-19 protocols and return from quarantine quicker. The NFL provided three testing options for a fully vaccinated individual to return provided he or she is asymptomatic for at least 24 hours. In the updated protocols, an individual's return from quarantine is possible as soon as the day after his or her initial positive test.

Fully vaccinated individuals will continue to test weekly and unvaccinated individuals daily.



https://www.nfl.com/news/nfl-update...for-quicker-return-from-quarantine-for-v