It’s been almost 40 years, but if you love Thanksgiving Day football, then you definitely know who Clint Longley is. The unknown reserve quarterback, subbing for Roger Staubach, came up big in leading the Cowboys to a dramatic victory against Washington.

Longley would play in only nine games during a short three-year career. But sometimes all it takes is one game to make a mark.

Listen to the great music and voice of John Facenda as NFL Films tells this improbable story.