Personal preference, also according to what I have read, the head referee has sole discretion on something like this, at half time it was brought to their attention they checked it out and deemed it no big deal, they could have called the game right then and there, and then the Pats crushed the Colts ( I do believe) in the 2nd half. So much for the advantage to the Pats.Could someone explain to me how deflating a football would benefit anyone.