David Nalbandian was fined the maximum $12,560 and placed under police investigation for assault after kicking an advertising board and injuring a line judge during the Queen's Club final.
The ATP confirmed the fine for unsportsmanlike conduct on Monday and said the Argentine player also was stripped of his 36,500 pounds ($57,350) in prize money.
London police, meanwhile, said they were investigating a complaint of assault filed against Nalbandian, who was defaulted from Sunday's match against Marin Cilic in the grasscourt Wimbledon warmup event.
Police declined to say who made the complaint. Any member of the public who witnessed the event in person or on television could have made a complaint, as could the line judge himself.
''We are aware of an incident at the Aegon Championships,'' the Metropolitan Police said in a statement. ''A complaint has been made and the Metropolitan Police Service is now investigating. The allegation is of assault.''
Nalbandian won the first set 7-...