The NFL doesn't have to meet court evidence rules. Per the league rules, they only have to prove that it was "more likely than not". Beyond a reasonable doubt has no bearing in this, only what is in league rules.Sure, but the NFL doesn't have the authority to subpoena phone records. I wonder if they would if this does end up going to court....
If this did go to court though, then the NFL would be able to subpoena phone records as part of discovery. At which point, the burden is still only what's in the rule "more probable than not".
Brady would be better off to just take the 4 weeks vacation and let this just go away.