World number one Novak Djokovic automatically progressed to the Madrid Open semi-finals after his quarter-final opponent Marin Cilic was forced to withdraw because of food poisoning on Friday.
“Dear fans, Madrid Open organisers, Novak Djokovic, I am sorry to announce that I must withdraw from today’s match,” said the Croatian on Twitter.
“I have had a terrible night dealing with a case of food poisoning. I am extremely disappointed to have my time in Madrid end in this way. Thank you for the support.”
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Djokovic, in his 250th week at the top of the men’s ATP rankings, will face either Roger Federer or Dominic Thiem in the semi-final on Saturday.
The Serbian, who triumphed in the Spanish capital in 2011 and 2016, beat Taylor Fritz and Jeremy Chardy in the second and third rounds.