DALLAS, TX – APRIL 21: Owner, Mark Cuban before game three of the Western Conference Quarterfinals of the 2016 NBA Playoffs at American Airlines Center on April 21, 2016 in Dallas, Texas. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Ronald Martinez/Getty Images)

Mark Cuban laid down the gauntlet on Mavs staffers if they leaked out draft picks