Browns defensive tackle Andrew Billings opts out for the 2020 season
NFL Players—and a Lot of New England Patriots—Are Opting Out of the 2020 Season - WSJ
Players opting out of 2020 NFL season because of coronavirus concerns - Tracking full list, what losses mean - ESPN
Go for It: The Story Behind the NFL's Fourth-Down Conversion - The Ringer
Siblings in the NFL From the Last 10 Years
GoLocalProv New England Patriots Announce 53-Man Roster
Why are the Patriots the only team to lose multiple star players to the opt- out? - Pats Pulpit
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Philadelphia Eagles - Wikipedia
Report: Patriots don't expect any more players to opt out of 2020 season
Inside NFL's Bid To Create 'Safe' Stadiums During Pandemic