World No. 1 Djokovic undecided on U.S. Open
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Novak Djokovic of Serbia returns a shot during 2019 U.S. Open at the USTA Billie Jean King National Tennis Center in New York, August 30, 2019. /VCG

Novak Djokovic of Serbia returns a shot during 2019 U.S. Open at the USTA Billie Jean King National Tennis Center in New York, August 30, 2019. /VCG

Novak Djokovic, who recently tested negative for coronavirus after testing positive during his Balkans charity event, told a Serbian newspaper on Wednesday that he still was not sure if he would play the U.S. Open. 

"I still do not know if I will play the U.S. Open," the tennis World No. 1 said in an interview with the Sportski Zurnal daily paper. 

"I will certainly not play Washington or Cincinnati as planned." 

The ATP and WTA tours are set to resume next month, with the U.S. Open being the first Grand Slam following the restart, due to get underway behind closed doors in New York on August 31. 

Serbia's Novak Djokovic celebrates winning his match against Croatia's Nino Serdarusic during Adria Tour in Zadar, Croatia, June 21, 2020. /VCG

Serbia's Novak Djokovic celebrates winning his match against Croatia's Nino Serdarusic during Adria Tour in Zadar, Croatia, June 21, 2020. /VCG

Djokovic resumed training on Tuesday and said he would take part on clay events. "Participation at Roland Garros is certain for now, Madrid and Rome are part of my agenda," he said. 

Djokovic has recently accused critics of subjecting him to a "witch-hunt" after his regional Adria Tour tennis event ended in a novel coronavirus fiasco last month. Fellow Serb Viktor Troicki, Bulgarian Grigor Dimitrov and Croatian Borna Coric all tested positive for the virus and the event had to be called off. 

"I can only see criticism lately and much of it is malicious," Djokovic said, "It's obviously more than just criticism, it's like an agenda and a witch-hunt are on. Someone has to take the fall, a big name."

"My intention was pure, I was whole-heartedly committed to organizing a humanitarian event to help players and tennis federations in the (Balkan) region," he said. 

"We complied with all the laws and regulations. But we've learned our lessons and some things could have probably been done in a different way."

On Tuesday, World No. 2 Rafael Nadal said that he would take part in the Madrid Open, raising doubts about whether he intends to defend his title at the U.S. Open. 

(With input from agencies)