Andy Murray is expecting a "weird" experience when he competes at this week's US Open, which is being held without any fans behind closed doors.
The first grand slam since the outbreak of the Covid-19 pandemic begins in New York on Monday.
The Briton, 33, is playing Japan's Yoshihito Nishioka in his first singles match at a major since the 2019 Australian Open after injury problems.
"Mentally it's going to be difficult for the players," said Murray.
"But the level of tennis is what's important. I play my first match on Arthur Ashe where I have experienced some of the best atmospheres I've ever had in tennis.