Washington All-Pro guard Brandon Scherff in virus protocol - The San Diego Union-Tribune
NFL players by college on 2021 rosters
Detroit Lions place quarterback Jared Goff on Reserve/COVID-19 list
COVID-19 List Tracker for Players & NFL Policies
COVID-19 issues mount for Arizona Cardinals - The Boston Globe
Football announces walk-on tryout information - Sam Houston
IR, PUP, NFI. What do all of those NFL roster designations mean? - ABC News
Changing the COVID rules will help the NFL on the field, but will it be safe for players? - The Boston Globe
Tyreek Hill among 21 NFL players added to COVID-19 list
NFL COVID-19 tracker: Updated team-by-team list of players in protocol for Week 15