Bernard Tomic's season did not get any better as the Australian retired during his first-round match against Victor Hanescu at the Australian Open.

Tomic has won only five tour matches since January and his ranking has slipped to 61st, but it is off the court where the 20-year-old's troubles have made headlines.

Tomic's father and coach, John, is awaiting trial in Madrid for an alleged assault on his son's hitting partner, Thomas Drouet, in the Spanish capital prior to the start of the tournament three weeks ago.

Tomic Sr has been suspended from all ATP tournaments and barred from the French Open, with reports he could be allowed in as a spectator for today's match also dismissed.

This was Tomic's first match since a first-round loss in Madrid, but it began badly when he needed treatment for an apparent hamstring problem early on.

Tomic played on but lost both the first two sets and called it a day when Romanian Hanescu went a break up in the third to lead 7-5 7-6 (10-8) 2-1.