John Tomic, father of Bernard Tomic, is a wacko. He fits nicely in tennis's fine tradition of belligerent, obsessive, control-freak helicopter parents. Sometimes he yells at his son. Sometimes he head-butts his son's hitting partner, knocking him unconscious.
Bernard Tomic is 19 years old. He's currently the 36th-ranked men's tennis player in the world, and the top-ranked player in Australia. Until now, he was perhaps best known in this part of the world for a bizarre standoff he had with police in January.