Bernard Tomic wasnt happy with his Dad/Coach body lanugage during his match against David Ferrer in Miami. Tomic even asked the chair umpire to get his Dad removed.
From my experience with John Tomic from a very early stage in Tomic’s tennis career, he needs to give positive feedback to his son! Most of the time he seems to be holding Bernard back. John maybe its time to step aside for a real coach!