Former world number one Andy Murray and Eugenie Bouchard, a semi-finalist in Paris six years ago, were handed wild card entries for the French Open which begins on September 27.
Felix Auger-Aliassime marched into the US Open third round with a routine 6-2, 6-3, 6-4 win over Britain's Andy Murray at the Arthur Ashe Stadium.
US Open: Six-time winner Serena Williams powered past 96th-ranked Kristie Ahn after Andy Murray came from two sets down to win a five-set thriller.
Andy Murray advanced in hot and humid conditions to a second-round date with German fifth seed Alexander Zverev at the Western and Southern Open.
USTA spokesman Chris Widmaier said that the exclusion of Guido Pella and Hugo Dellien was in line with advice from the Centers for Disease Control and Prevention.
Rafael Nadal is preparing to play at the French Open this year as he looks to win his thirteenth title.
The Western & Southern Open is normally staged in Cincinnati but was moved to New York as a one-off in order to minimise COVID-19 risks for players travelling to compete at US Open.
Andy Murray is taking part in the Battle of the Brits Team Tennis event in London this week and remains focused on the US Open in New York, scheduled to start on August 31.
Andy Murray, who is set to return to action at the Washington Open in mid-August, is planning to play the US Open as well as the French Open this year.
Andy Murray was due to face Cam Norrie in a third place play-off in Roehampton after losing in the semi-finals to Dan Evans.
The US Open will run from August 31 to September 13 on the hard courts of New York with the rescheduled French Open on clay taking place just a fortnight after.
Andy Murray, a three-time Grand Slam champion, has been out of action since November with a pelvic injury.
With the ATP and WTA seasons postponed due to the coronavirus, Andy Murray's first appearance since November's Davis Cup Finals will be a welcome tonic for tennis fans.
Andy Murray, appears to be one of his few rivals Nick Kyrgios respects, with the Scot having defeated Novak Djokovic in both the 2012 US Open and 2013 Wimbledon finals.
Virtual Madrid Open: Andy Murray downed Belgium's David Goffin in the final but the drama of the online tournament took place in the previous round.
Andy Murray had considered retiring before surgery allowed him to make an initial comeback from injury last year, winning his first ATP title since 2017 in Antwerp last October.
Andy Murray and Novak Djokovic shared an Instagram Live chat where they discussed their rivalry.