NFL overtime rules: A lot of fans want the league to make changes
Football NFL Playoff Rules
Using data and analytics to evaluate the 2022 club proposals on
NFL playoff OT rules: What prompted league to enforce changes
United States Football League - Wikipedia
NFL makes a rare in-season rule adjustment just before the start
2022 NFL Overtime Rules - OnFocus
NFL overtime rules 2023: Explaining how the OT format works in
NFL owners approve rule change for overtime in playoffs