Don't delete those text messages, Roger Goodell.
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Michael Avenatti, a lawyer who's suing the NFL on behalf of fans due to the Hall of Fame game's last-minute cancellation last month, sent a letter to Goodell that directs him to preserve "electronic materials" pertaining to the case.
Pro Football Talk reports that the letter contains exchanges between Goodell and Tom Brady during the Patriots quarterback's appeal hearing in July in addition to information that makes Avenatti believe the league purposely didn't cancel the game in a timely manner.
RELATED: Hall of Fame game between the Packers and the Colts has been canceled
It's got to make Tom Brady fans feel good that Deflategate appeal could cost Goodell and the NFL... if Avenatti is right (and wins the lawsuit).