There is a green dot on the back of certain players’ helmets during games — but what does it mean, and who wears it? The permutations and combinations in an NFL game are nearly infinite.

From NFL plays to college sports scores ... clean and classic helmets there are in college football, with Ohio State's classic silver sticker-adorned helmets clashing with Notre Dame's iconic ...

Players can earn stickers to be placed on their helmets at Ohio State. These trinkets are essentially a reward for either individual or team success on the football ... for the NFL, MLB, NBA ...