The 29-year-old Bulgarian tennis player had been competing in the Adria Tour exhibition tournament in Croatia until he withdrew as he fell ill during the weekend.
All professional tennis tours were suspended in early March and will not return before August as countries went into lockdowns and closed borders to contain the spread of the novel coronavirus.
The current world number one, Novak Djokovic has 17 Grand Slam titles to his name - two behind Rafael Nadal and three fewer than Roger Federer.
Serbian tennis star Novak Djokovic caused a stir in a live Facebook chat with fellow Serb players on Sunday when he said that if a vaccination was compulsory when the tours resume, then he “wouldn’t want to be forced by someone” to take it.
Novak Djokovic admits he was on brink of defeat with dizziness and dehydration before coming through a five-set thriller against Dominic Thiem to clinch title – also his 17th Grand Slam – and return to world number one.
Nobody beats Novak Djokovic at this stage of the Australian Open. At least, not until now. Djokovic is a seven-time champion at Melbourne Park, where he has never lost a final or semifinal he has contested.
Ivanisevic, a serve-and-volley specialist from Croatia, won the 2001 title at the All England Club as a wild-card entry while Martinez, a baseliner from Spain, was the 1994 champion at Wimbledon.
Djokovic's win gave Serbia an unassailable 2-0 lead ahead of the doubles to set up a meeting with either the Nick Kyrgios-led Australia or Rafael Nadal's Davis Cup champions Spain in the final.
Novak Djokovic and Rafael Nadal urged organisers of the ATP Cup and Davis Cup Finals to consider a possible merger, saying it makes little sense to have two men’s team competitions on the tennis calendar.
After a 7-5, 7-5 defeat to Dominic Thiem in his tournament opener, six-time champion Roger Federer may find it tricky to qualify for the last four of the ATP Finals.
The 32-year-old Serbian tennis star avenged his loss to the 21-year-old Greek 3 weeks earlier in the Shanghai Masters, with a 58-minute victory.
Meanwhile, world number one Novak Djokovic defeated Britain’s Kyle Edmund with 7-6(7) 6-1 to reach the Paris Masters quarter finals.
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