Of destruction of evidence that was directed for an investigation. Brady could have said no to the request but preserved the cell phone. But destroying the cell phone raises the presumption that something there was against his interests. From uslegal:If a person negligently or intentionally withholds or destroys relevant information that will be required in an action is liable for spoliation of evidence.When a crucial document is lost by spoliation, the courts may try to infer the original information by applying spoliation inference rule. Spoliation inference rule is a negative evidentiary inference. When applying the rule, courts will review the altered document with inference against the spoliator and in favor of the opposing party. The theory behind spoliation inference is that when a party has destroyed evidence, it shows that the party had consciousness of guilt or other reasons to avoid evidence. Hence, the court will conclude that the evidence was not in spoliator’s favor.- See more at: http://civilprocedure.uslegal.com/discovery/spoliation-of-evidence/#sthash.6pk7GGAR.dpuf
Tom Brady was under no legal obligation to provide his phone, or its contents, to the investigators.
The NFL wants people to believe that the phone was deliberately destroyed, and Tom Brady says the phone was broken. I tend to side with the party that hasn't continually lied, and leaked false information throughout this whole debacle, and that side isn't the NFL.
Regardless, he provided the information from the phone that they requested. They knew at the time of the investigation that he was not going to hand over his phone, nor did they want him to. Whether the phone was destroyed or broken was immaterial to his suspension, since they didn't know it was broken until the appeal hearing.
Since physically possessing the phone was immaterial to his suspension, the condition of the phone at his appeal hearing should have had no bearing on the decision to uphold the suspension.
The NFL has announced that they are going to start being diligent about the air pressure of footballs. As others have suggested, they should have tabled everything until the end of the season, when they would have a better idea of what really happens to the pressure inside of a football during games of varying weather conditions.