And coincidence, that seems to be the big deal. That only the Pats' balls and all of them went down in pressure from what I understand.
This has been a season-long behavior. It was not confined to only the last game. That is only where it was discovered.
Sounds like some bad tire valves on my car years ago. Could it be that the Pats balls had bad valves from the factory? I don't know and I more suspect that one of the ball boys was sticking air needles in, but a batch of balls with defective valves or bladders is a potential.