NFL At Large: Super Bowl 50 Three Key Preview.
Storyline: After two weeks of talk and hype, the big game is finally here. Super Bowl 50 is upon us. There are plenty of story lines heading into this one. The Broncos come into this one as the underdogs but they sport a dominate defense and a quarterback in Peyton Manning who wants to win the Super Bowl in what might be his final game. The upstart Panthers are prohibited…