Depends on when they fill their balls.
If you make them set the pressure in their balls in a nice, ice cold, dressing room, then their balls will be at 13 psig.
So if they are doing the pressure check at the field, all you have to do is to turn the heat off to the room at their ball pressurizing station.
:)
I forget the reason for the conversation.
Rush's transcript is very informative
Patriots by 3 in a hard fought battle ... the best SB in many years ... true gladiatorial spirit.