Why does the NFL even have a clock in playoff overtime? They will play until someone wins. - Quora
Is there overtime in the NFL Preseason?
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Eagles head into preseason game against Browns with key position battles at receiver and defensive back – Trentonian
Despite What the Internet Says, the NFL's Overtime Rule Is Just Fine - InsideHook
NFL overtime rules 2022: Explaining how the OT format works in football for regular season, playoffs
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Is there overtime in NFL preseason games? Should there be?