Scotland Yard said a complaint had been made following the incident at the
Aegon Championships on Sunday.
A spokesman said: "We are aware of an incident at the Aegon Championships on
"A complaint has been made and the Metropolitan Police Service is now
"The allegation is of assault."
Line judge Andrew McDougall was left with blood pouring from his shin following the tennis star's outburst during the men's final at the Queen's Club in west London.
More to follow...