So what are those stickers on Ohio State's helmets? Here's everything you should know ahead of the national championship.

A buckeye is a type of nut. It was named by Native Americans who thought it looked like a deer's eye. Buckeye trees tend to bloom in late summer and early fall, and they grow large Buckeye nuts.

With Tennessee playing Ohio State in the first expanded College Football Playoff, that buckeye helmet sticker ... Stickers were used as an individual reward system for touchdowns, interceptions ...

"According to folklore, the Buckeye resembles the eye of a deer and carrying one brings good luck. 'Buckeyes' has been the official Ohio State nickname since 1950, but it had been common use for many ...