Sometimes, it's the most subtle of plays that make the difference in a championship season.
Other times, those plays radiate like a house all lit up for Christmas.
Three of the four teams in this year's College Football Playoff -- Clemson, Michigan State and Oklahoma -- had defining plays that are pretty easy to pick out. It wasn't nearly as obvious with Alabama, which won most of its games by comfortable margins.
Here's a look back at the four plays most responsible for Alabama, Clemson, Michigan State and Oklahoma being a part of this year's playoff party:
CLEMSON
For much of Clemson's 24-22 win over Notre Dame on Oct.