NJ.com | Brendan Kuty: A federal appeals court has upheld a decision to unseal a letter from Rob Manfred to Brian Cashman that allegedly shows that Major League Baseball covered up the extent of the Yankees’ actions during the 2017 Apple Watch scandal. Randy Levine and the Yankees have argued that, because the Yankees were not a named party in the original lawsuit — DraftKings users sued MLB, the Red Sox, and the Astros over the sign-stealing scandals that they claimed ruined the integrity of their bets, but not the Yankees — the letter should not have been introduced to the court in the first place.