I am not a believer in a coach saving plays for certain teams...now he may have some plays that he has in his bag for certain packages a team puts on a field, but IMO not determined by the team they are playing in and of that circumstance....if he has a play that will work at a certain time he better pull the trigger on it...not wait for a certain team to do it on.
Every game is just as important as another, of course division games come 1st, conference games 2nd.....but if he has plays that will work at a certain time he better be using them, not holding them in his pocket for certain teams.