US Open organisers have no plans to change its scheduling to avoid potential late finishes at the upcoming Grand Slam event.
The finishing of matches in the early hours has been a regular source of concern for players.
US Open night sessions start at 19:00 in New York and feature two matches.
"At the moment, we are staying the course with two night matches. We will continue to evaluate it," said US Open tournament director Stacey Allaster.
Kazakhstan's Elena Rybakina said she felt "destroyed" by the recent Canadian Open scheduling, where her quarter-final last week finished at 03:00 local time.