The NFL season started with 32 teams fighting to get to New Orleans for Super Bowl LIX, and now, that battle is down to just four teams as we get set to crown AFC and NFC champions on Sunday.  After a wild divisional round that saw one huge upset,

Our NFL Nation reporters bring us the biggest keys to both games, and analytics writer Seth Walder makes a bold prediction for each matchup. NFL analyst Matt Bowen identifies a ke