Rivalry Head-to-Head.

Michigan and Ohio State, every year.

The Iron Bowl — the state's defining rivalry.

The Red River Rivalry, at the State Fair.

America's Game — the most storied rivalry in the sport.

The World's Largest Outdoor Cocktail Party.

Mississippi State and Ole Miss, every year.

Auburn and Georgia, every year.

Georgia and Georgia Tech, every year.

Paul Bunyan's Axe — the most-played rivalry in the sport.

Michigan and Michigan State, every year.

Oklahoma and Oklahoma State, every year.

The Victory Bell — one city, two teams.

USC and Notre Dame, every year.

Washington and Washington State, every year.

The in-state rivalry long known as the Civil War.

The Big Game — for the Stanford Axe.

The Territorial Cup — the oldest trophy in the sport.

BYU and Utah, every year.

West Virginia and Pittsburgh, every year.

One of the fiercest series in the sport.

South Carolina and Clemson, every year.

The Victory Bell — eight miles apart.

Virginia and Virginia Tech, every year.

The Cy-Hawk Trophy.

Iowa and Minnesota, every year.

Missouri and Kansas, every year.

Kansas and Kansas State, every year.

The Lone Star Showdown, renewed after 13 years apart.

Indiana and Purdue, every year.

The Land of Lincoln Trophy.

Alabama and Tennessee, every year.

LSU and Ole Miss, every year.

The Southwest Classic, played in Arlington.

Kentucky and Louisville, every year.

SMU and TCU, every year.

Colorado and Colorado State, every year.

Michigan State and Penn State, every year.

A heavyweight series that usually shapes the league.