between the two teams. I don't think there are any truly great rivalries in professional sports anymore.

Honestly in terms of keeping track of their rival's every move it is hard to beat BYU/Utah. Too many on both sides just obsessed with everything the other one does.

Michigan/Ohio St is a more relevant game though to college football season outcomes. There is also plenty of emotion there.

But give me a good college rivalry over a pro one any day. I mean in so many cities their hated rival players becomes their player.