Why is Notre Dame not in a conference for college football? Here's what to know as the Irish are set to compete in the CFP championship game on Monday:

Then, for the biggest play of the game, Notre Dame decided to leave Ohio State wide receiver Jeremiah Smith on an island. It was third and 12 and the Fighting Irish would get the ball back with a stop with a chance to tie the game. Smith completely burned his defender and he was wide open for a huge gain, and he iced the game.