Five rule changes the NFL should consider - Sports Illustrated
What is the best 2021 NFL rule change proposal? - Pride Of Detroit
2021 NFL rule changes guide - What to expect from more replay help, jersey number flexibility, more - ESPN
22 people who will shape the 2022 NFL season
What NFL Rule Changes Are Under Consideration at the 2023 NFL Owners Meetings?
The ESPN Daily podcast -- How to listen, episode guide and more - ESPN
NFL week 1: Record number of Americans to bet on NFL this season
N.F.L. to Crack Down on Taunting This Season - The New York Times
College Football Rule Changes for 2021 - The New York Times
Breaking down the NFL's 6 new rules for 2021 season - Pride Of Detroit
NFL approves 2 rule changes; postseason OT altered
NFL approves 2 rule changes; postseason OT altered
NFL approves overtime rule change for postseason