Second seed Angelique Kerber stayed on track in her quest to unseat Serena Williams as world number one by beating Mirjana Lucic-Baroni of Croatia 6-2, 7-6(7) on Wednesday to reach the third round of the US Open.
Raducanu falls in first match since US Open triumph.
Former world number one Andy Murray is in line to play Grigor Dimitrov in the opening round of the inaugural ATP Cup, with Bulgaria qualifying among the final six teams in the nation-based tournament.
Poland's world number four Agnieszka Radwanska breezed past Spaniard Larra Arruabarrena 6-0, 6-2 in the semi-finals of the Korea Open on Saturday to set up a title clash with Russia's Anastasia Pavlyuchenkova.
World number one Novak Djokovic turned the page on his contentious US Open exit and began his claycourt season with a convincing 6-3, 6-2 victory over wildcard Salvatore Caruso in the second round of the Italian Open.
Images from Day 7 of the 2020 US Open in New York on Sunday.
Switzerland's Stanislas Wawrinka rose to the occasion once again to beat Novak Djokovic with a scintillating display to win his first US Open and third Grand Slam title.
Men's top seed Novak Djokovic and women's number two Angelique Kerber look to book berths in the last four of the US Open as the quarter-finals of the year's last Grand Slam get underway on Tuesday.
A summary of Thursday's play at the US Open.
Juan Martin del Potro's summer renaissance continued on Monday as the unseeded Argentine advanced into the US Open quarter-finals when Austrian eighth seed Dominic Thiem quit their match with an injury.
American Jennifer Brady defeated compatriot Coco Gauff 6-2, 6-4 at the Top Seed Open on Saturday, earning a spot in her first WTA final.
Indian tennis ace Sania Mirza stormed into the mixed doubles semifinals besides reaching the doubles quarterfinals, but compatriot Leander Paes exited the US Open with unexpected defeats in both his events.
'I've accomplished a lot this past year and I feel I can do even more, now I actually believe I can do more after all of this success so I am going to keep striving and hopefully win many more Grand Slams. I have been thinking about playing the Olympics for a couple of years, I think it is a very special event'
World number two Rafael Nadal confirmed on Tuesday that he will not defend his US Open crown this year at Flushing Meadows as organisers released the singles entry list for the Grand Slam. Spain's Nadal had said in June that he had reservations about travelling to the U.S. amid the COVID-19 pandemic and he joins women's world number one Australian Ash Barty in skipping the tournament due to COVID-19 concerns.
A clash of generations will decide the US Open on Saturday with Serena Williams taking a fourth crack at Grand Slam history against teenager Bianca Andreescu, who was not even born when the American lifted her first Flushing Meadows trophy.
The final will pit power against power when Andreescu takes on her childhood hero Williams, who claimed her first US Open title in 1999 before Andreescu was even born.
After a flawless first set from Mertens the tide turned in Andreescu's direction in the second when she fired a cross-court forehand winner to break the Belgian at love and take a 4-2 lead.
Fiery Australian Nick Kyrgios mostly kept his cool en route to a 6-4, 6-2, 6-4 dismantling of Antoine Hoang in their second round clash at the US Open on Thursday. The 28th seed had a row with the umpire even before the match started but avoided a full scale meltdown to reach the third round at Flushing Meadows for the fourth time.
Australia's Nick Kyrgios could find himself in hot water again after accusing men's tennis governing body ATP of being "corrupt" following his US Open first round victory.
US Open champion Sloane Stephens said she has no pity for Madison Keys after thrashing her 6-3, 6-0 in Saturday's final, given the huge runnersup check her friend will receive.
Keys is expected to be the aggressor on Arthur Ashe Stadium against a more defensive Stephens, one of the best retrievers on the tour.
Serena Williams sounded a warning for her fellow Australian Open contenders with a sleek win
Wimbledon champions and World No 1s Novak Djokovic and Serena Williams head the field for the men's and women's events at this year's US Open.
'It was exciting and this is why I came to New York, to go through these emotions'
Ukrainian fourth seed Elina Svitolina powered into the third round of the U.S. Open with a 6-4, 6-4 win against Russian Evgeniya Rodina on Thursday.
Factbox on Rafael Nadal, who beat Dominic Thiem 6-4, 6-3, 6-2 to win his 11th French Open title on Sunday:
When you can travel globally is when tennis can come back, from a pro level. From a local level, we can start right away and that's what we would be focused on at the beginning, says Tennis Australia head Craig Tiley.
Petra Kvitova takes on Naomi Osaka in Saturday's Australian Open final with one of them set to emerge as a fresh champion at Melbourne Park.
A golden moment for Australian Ashleigh Barty and American CoCo Vandeweghe was tinged with disappointment when tournament officials did not let them speak to the crowd after winning the U.S. Open women's doubles final on Sunday.
Defending champion Rafael Nadal failed to win a single game in the opening set of his US Open quarter-final against Dominic Thiem on Tuesday but fought back to beat the Austrian 0-6, 6-4, 7-5, 6-7 (4), 7-6 (5) in match that ended past 2 am in New York.
More shocking than his departure was the manner of the 3-6, 7-5, 7-6 (7), 7-6,(3) loss to the Australian, with Federer simply wilting in the suffocating humidity and exiting a Grand Slam before the quarter-finals for just the fifth time since 2004.
On Saturday, the young guns showed no signs of breaking the stranglehold of the three men who collectively own 50 Grand Slam titles and also split the season's first three majors.
Rafael Nadal said he was sad to have squandered an opportunity to do something special at the US Open with his fourth-round loss at Flushing Meadows, but happy with his effort and prospects going forward this season.
Steady rain hit the US Open on Monday, washing out the last match on Arthur Ashe Stadium court featuring five-time champion Roger Federer.
IMAGES from Day 8 of the French Open at Roland Garros on Sunday.
A look at the top men's contenders at the 2020 French Open.
After 17 trips to Flushing Meadows and six US Open titles Serena Williams did something on Thursday she had never done before -- win a match indoors.
Rafael Nadal was at his awe-inspiring best as he recovered from a first set wobble to crush Juan Martin del Potro 4-6, 6-0, 6-3, 6-2 in the US Open semi-finals on Friday and move within reach of a 16th Grand Slam title.
One year after shaking off a crippling foot injury to claim a stunning US Open victory, Sloane Stephens said her follow-up season felt just as good as the American prepares to play in next week's WTA Finals for the first time.
The 27-year-old Romanian beat Sloane Stephens at Roland Garros to win her maiden Grand Slam title in June and will have spent 40 weeks at the top of the rankings by the end of the season.