The US Open tennis championships will go ahead as scheduled in August but without spectators, officials confirmed on Tuesday.

After weeks of uncertainty surrounding the tournament - which is being staged in the epicentre of the US coronavirus crisis - New York Governor Andrew Cuomo formally gave the event the green light.

"We would not have access to Manhattan, we would have to sleep in hotels at the airport, to be tested twice or three times per week," Djokovic said.

"Also, we could bring one person to the club, which is really impossible.

"I mean, you need your coach, then a fitness trainer, then a physiotherapist."

Djokovic's misgivings have been shared by defending men's singles champion Rafael Nadal, who would be chasing a 20th Grand Slam title at Flushing.

Nadal, the world No 2, said earlier this month he would not play in New York if the tournament was taking place now, adding that tennis should not resume until it is "completely safe" for competitors.

Australia's Nick Kyrgios meanwhile reacted with disgust about reports indicating the tournament was set to go ahead.

"People that live in the US of course are pushing the Open to go ahead 'Selfish' I'll get my hazmat suit ready for when I travel from Australia and then have to quarantine for 2 weeks on my return," Kyrgios posted.

Two-time Wimbledon champion Petra Kvitova expressed reservations but said she expected financial imperatives would persuade many players to travel.

"To be honest, I don't feel like going ... we can't do anything, we can't even really enjoy the tournament. And, above all, we'll play without fans which is the worst thing there is for me," Kvitova said.

"But it will be a tournament where you can make money after a terribly long time and I think many girls will go."

However Karolina Pliskova, the world number three and 2016 US Open finalist, said she was "definitely flying" for the tournament.

"I've been at home for six months now. It's important to start. The sooner we start, the sooner we will play before an audience," Pliskova said.

"If we stay home waiting for the ideal situation, we may wait forever. The tournament is better with fans but if the players like tennis, they should go."