Some think they know football. Then you ask them what year did your team last win a championship and instead of an answer, they give you an excuse. Then you have the others who actually know football. They know the sport so well, they can answer that question about any team, not just their favorite. So to those who think they know football, this quiz is for you. Based on a helmet, are you able to figure which team it is? Only 27 percent can get even half of these right so see if you fall in line with the percentages or not.