Leave it to a lawyer to find interest in obscure rules . . . yes, even in football. Official NFL rules require the following:
The home club shall have 36 balls for outdoor games and 24 for indoor games available for testing with a pressure gauge by the referee two hours prior to the starting time of the game to meet with League requirements. Twelve (12) new footballs, sealed in a special box and shipped by the manufacturer, will be opened in the officials’ locker room two hours prior to the starting time of the game. These balls are to be specially marked with the letter “k” and used exclusively for the kicking game.
Tonight I will try to loosen up and have fun instead of wondering about this “special sealed box” and whether the balls have been properly pressure-tested at 12.5 to 13.5 pounds per square inch.