I've just noticed .....
that one particular episode, the 1991 Redskins season, has an error in it.
It claimed QB Mark Rypen had held out during training camp that '91 year. I clearly remember that was the 1992 season training camp that he held out. Rypen was the MVP of that 91 season's SuperBowl and he wanted more money for the coming ('92) season.
Besides, that would make more sense to ask for more money only "after" a SuperBowl victory and being MVP in that SuperBowl. Especially a steamroller 14-2 season, which 1991 was. The owner, JK Cooke, wasn't in much of a mood for salary increases for anyone after the 88, 89 and 90 seasons. He would be after adding a third SuperBowl trophy to his showcase.
I don't think this did any tremendous damage to the story line for this episode but now I wonder what other episodes have errors.