I might be an interesting case. I know which players play where but not as much on back stories. Some but not all. I might even miss one or two starters when going through the line up. I can say however I've missed one single game since the 87 season, the Saints game the day I got married on Sept 27th, 2009.
I also have an excellent memmory for games and moments. Without looking it up I can tell you final score of any Bills playoff game, ever. Part of the reason I love board member corta765's "Game defining moments" I can litterally see and remember all the moments that are written up. Whish those write ups would go back further.
I've always been in the know on players, positions and such to a pretty good degree. But my fanatiscm is tied into games, moments and the uniform. I love to read old box scores and game recaps. the "relentless book" was a god send in the days before the internet and Pro Football Ref.com.
I don't think the "average" fan could hold their own against me in game and moment specific Bills history trivia.
GO BILLS