It's the Carolina Panthers and the New England Patriots.
Quite an interesting matchup, since there is no city or state named Carolina (North Carolina and South Carolina, sure, but no plain-old Carolina) and the same goes for New England (it refers to the general region of the north easternmost part of the US...Massachusetts, Connecticut, Vermont, Rhode Island...).
So basically it's a showdown between teams of nebulous geographical origins. 🙂
Okay, not really, but I always find it weird that New England isn't the Boston Patriots, since that's where they play. And the Panthers are based in Charlotte, North Carolina. So why not the Charlotte Panthers? Or the North Carolina Panthers?