11 NFL Fun Facts You Didn't Know
Why Does the NFL Play on Christmas?
NFL playoff permutations for Week 16: Can Eagles clinch NFC East division title? And who can book a wild card berth over Christmas?, NFL News
The history of NBA games on Christmas Day
Top 10 NFL Christmas Day games of all-time (countdown) - Sports Illustrated
KC's Legends Field to be transformed into World's Largest Christmas Light Maze and Village
Miami Dolphins beat Kansas City Chiefs in NFL's longest game
NFL Christmas: Week 16 picks, schedule, playoff picture, odds, injuries - ESPN
NFL conference championships: 4 storylines to watch : NPR