56 facts & tidbits from Super Bowl history
It's Really Hard to Win a Super Bowl
How Repeat Super Bowl Champions Became a Thing of NFL's Past, News, Scores, Highlights, Stats, and Rumors
Chiefs enter NFL playoffs favored for a rare Super Bowl repeat, FOX 4 Kansas City WDAF-TV
Kansas City Chiefs' Patrick Mahomes gets his second shot at consecutive Super Bowl titles
NFL Playoffs: What We Learned From the Conference Championship - The New York Times
Ranking Every Super Bowl of All-Time From Worst to First
Eagles stun Patriots with late TD to win 1st Super Bowl title
Can Tom Brady and the Buccaneers repeat as Super Bowl champions?
Why We Don't See Super Bowl Repeats Anymore
No team has won back-to-back Super Bowls since the Patriots in 2005. Why has it been so difficult? - The Boston Globe
Tom Brady Explains Why It's So Hard To Repeat As Champions - The Spun: What's Trending In The Sports World Today