NFL Overtime Rules NFL Football Operations
What is the XFL? Explaining the teams, players to watch, rules and more – NBC Sports Chicago
Chiefs vs. Bucs Super Bowl History
Tom Brady leads overtime touchdown drive to seal Patriots win over Chiefs and a third straight Super Bowl appearance
How many quarters are there in a game of American Football? - AS USA
Why Your Team Sucks 2019: Kansas City Chiefs
Chiefs top Bengals 23-20 on last-second kick for AFC title - Sent-trib
Last-second roughing call sets up Chiefs to win AFC title, deny Bengals repeat - The Boston Globe
NFL overtime rules need to guarantee each team one possession
Chiefs' Andy Reid to Patrick Mahomes before game-tying drive: 'When it's grim, be the Grim Reaper'