Scotland Yard is investigating a complaint of alleged assault against tennis player David Nalbandian, who was disqualified from the Aegon Championships final after line judge Andrew McDougall was injured.

Argentine David Nalbandian, 30, was leading Marin Cilic 7-6 (7-3) 3-4 at Queen’s final when he kicked a panel in front of Andrew McDougall’s seat.

Andrew McDougall’s leg was cut and umpire Fergus Murphy awarded the match to Marin Cilic despite boos from the crowd.

David Nalbandian apologised for the incident.

A spokesman for Scotland Yard said: “We are aware of an incident at the Aegon Championships on June 17.

“A complaint has been made and the Metropolitan Police Service is now investigating. The allegation is of assault.”

David Nalbandian was leading Marin Cilic at Queen's final when he kicked a panel in front of Andrew McDougall's seat

The incident happened after David Nalbandian missed a lunging forehand in the second set.

He kicked an advertising hoarding, which flew off its hinges and struck Andrew McDougall in the shin, causing a large gash.

Andrew McDougall received immediate treatment from St John’s Ambulance and saw the tournament medical team.

David Nalbandian told the 6,000-capacity crowd: “I am very sorry, sometimes you get frustrated on court.”

He was deemed guilty of unsportsmanlike conduct and his £36,500 ($58,500) prize money was withdrawn and he could be hit with a further fine.

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