NFL moves to 17-game regular season in 2021: What it means for teams, players, revenue and fans - ESPN
NFL preseason schedule 2021: Dates, fixtures list, time and more
Washington Commanders: Washington announces full preseason schedule
2021 NFL schedule release: Live analysis, Thanksgiving matchups, Thursday/Monday night games and more
NFL Power Rankings 2021 - Preseason 1-32 poll, plus players, coaches, general managers on hot seat - ESPN
2021 NFL preseason schedule: Dates and times for every game in Week 2 and 3
2021 NFL schedule release: Live analysis, Thanksgiving matchups, Thursday/Monday night games and more
NFL Preseason 2021: A Complete TV Schedule
Times/Dates Announced For Preseason Schedule
Dates and Times Revealed for 49ers Three Preseason Matchups
2021 NFL Playbook: Analysis, previews, predictions and deep dives on all 32 teams - The Athletic