Bernard Tomic's father, John, barred from all ATP events

John Tomic (left) has been accused of head-butting and spitting on Thomas Drouet.
Clive Brunskill/Getty Images

The father of Australian tennis player Bernard Tomic has been barred from being accredited to upcoming ATP events pending an investigation into allegations that he assaulted his son's training partner ahead of this week's Madrid Open.

John Tomic was charged with assault after allegedly head-butting the hitting partner, Thomas Drouet, on Saturday outside the player hotel in Madrid.

The ATP said in a statement Tuesday that "Mr. Tomic's credential privileges have been suspended at all ATP tournaments until further notice. The ATP's investigation into this incident remains on-going."

Drouet had told Tuesday's issue of French sports daily L'Equipe that he wanted John Tomic banned from all tour events because "he is a dangerous person, who has nothing to do in this sport of gentlemen."

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