Why football at Christmas is a very British tradition - BBC Bitesize
NFL on Christmas Day: History of pro football games on Dec. 25
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What NFL games are on Christmas Day? TV channels, schedule, more
All 21 NFL Christmas Day games
All 21 NFL Christmas Day games
All 21 NFL Christmas Day games
Does the NFL Always Play Games on Christmas?
NFL schedule: Football on Christmas Day! Three games for first time
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Ranking 12 greatest NFL playoff games of all-time: Chiefs' epic OT