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: ALABAMA A cynic might suggest that the play most responsible for Alabama being back in the playoff for the second straight year didn't even involve the Crimson Tide. Without the miracle fourth-and-25 lateral (on a bounce, no less) in overtime, Arkansas doesn't go on to beat Ole Miss 53-52. And if Ole Miss doesn't lose that game, the Rebels would have been in the SEC championship game -- and not the Tide. Who knows...