It's currently scheduled to take place in August.
U.S. Open organisers will wait until June to make a decision on American Grand Slam.
It's due to take place in New York from 24 August until 13 September.
New York has been the worst hit U.S. state by the COVID-19 pandemic.
Wimbledon has already been cancelled while the French Open was postponed and is due to take place one week after the U.S. Open.
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