World number one Novak Djokovic has called the coronavirus safety protocols, planned in order for the US Open to take place, "extreme".
The hard-court Grand Slam tournament is scheduled to start on 31 August at Flushing Meadows in New York.
"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," said Djokovic.
"Also, we could bring one person to the club which is really impossible."
The 33-year-old, speaking to Prva TV in his native Serbia, added: "I mean, you need your coach, then a fitness trainer, then a physiotherapist.