Anatomy of a Play: 49ers linebacker Fred Warner is an alien who can't be stopped
5 Things to Know: 49ers Linebacker Fred Warner
49ers' Kyle Shanahan: Fred Warner landing on COVID-19 list 'a reminder that this stuff is out there'
N.F.L. Playoff Predictions: Our Picks in the Wild-Card Round - The New York Times
Browns place G Chris Hubbard on Reserve/COVID-19 list
49ers putting talented roster in QB Trey Lance's hands
NFL conference title previews: How 49ers, Rams, Bengals, Chiefs were built - Sports Illustrated
Coronavirus: 49ers star Fred Warner comes off COVID-19 list four days before season stars – Santa Cruz Sentinel
Cowboys Doomed by Miscues Against 49ers' Defense - The New York Times
Steelers place star linebacker T.J. Watt on COVID-19 list
San Francisco 49ers - Wikipedia
Kyle Shanahan, San Francisco 49ers 'very grateful' to have linebacker Fred Warner back after stint on COVID-19 list - ESPN
5 Things to Know: 49ers Linebacker Fred Warner