This is why fans aren't allowed on the field after games.

This is video of Washington tight end Austin Seferian-Jenkins getting sucker punched by a Washington St. fan following Washington St.'s 31-28 overtime win last Friday.

Keep you eye on the 45-yard line, around the :13 mark, and you'll see Seferian-Jenkins walking off the field after the game when a fan come onto the field and sucker punches him.

Like I said, this is why fans can't come on the field follwing games. Sure the good suffer for the idiots, like this guy, but it happens in all forms of life. Have you been to an airport, lately?