Football Outsiders has collected detailed injury information from the NFL's weekly injury reports every year since 2001. And as you might imagine, 2020 was a bit different. The specter of COVID-19 clouded those injury reports and at times—shout out to the Week 12 Broncos!—sabotaged teams' competitive chances. That said, the season progressed more smoothly than many expected. And in fact, the 67 players who opted out of the season in August made more of an impact on adjusted games lost—even with its heavy weighting of starters and rotation players—than the players who missed time due to COVID (or COVID protocols) during the season.