Madison Keys beat fellow American CoCo Vandeweghe for the second time in eight days with a 6-4, 3-6, 6-3 victory on Monday to reach the second round of the Cincinnati Open.
He will skip the two Masters series events in Shanghai and Paris next month.
Simona Halep believes this year's French Open victory has helped justify her position as the women's world number one
Roger Federer reached the Rogers Cup semi-finals on Friday after coming to the net early and often in a straight sets victory over Roberto Bautista Agut on a windy day in Montreal.
Halep through but Stephens exits in Cincinnati
Greek tyro Stefanos Tsitsipas' dream run at the Rogers Cup continued on Friday as the teenager toppled defending champion Alexander Zverev 3-6, 7-6(11), 6-4 to reach the semi-finals in Toronto.
Greek teenager Stefanos Tsitsipas secured the biggest win of his career when he sent Wimbledon champion Novak Djokovic packing in the third round of the Rogers Cup with a stunning 6-3, 6-7(5), 6-3 win on Thursday.
Germany's Angelique Kerber breezed past American Madison Keys in straight sets to enter the Australian Open semi-finals in Melbourne on Wednesday. The 2016 champion easily won 6-1, 6-2 in just 51 minutes.
World number one Serena Williams kept her Wimbledon title defence on track on Sunday, downing Germany's Annika Beck 6-3, 6-0 with a crushing display of power and booming serves to chalk up her 300th grand slam victory.
Summary of sports events and persons who made news on Saturday
Serena Williams must navigate a heavily American quarter of the draw including sister Venus to complete a calendar sweep of the four Grand Slams, while two sensational quarter-finals loom on the men's side after Thursday's U.S. Open draw.
US Open champion Stephens again ended former world number one Victoria Azarenka's hopes of a fairytale comeback by beating her 3-6, 6-2, 6-1 in an afternoon encounter, while French Open champion Ostapenko beat unseeded American Danielle Collins in the nightcap, staving off a set point en route to a 7-6(1), 6-3 triumph.
A rampaging Madison Keys completed an American sweep of the US Open women's quarter-finals on Wednesday, dismissing Estonia's Kaia Kanepi 6-3, 6-3 to guarantee an American champion at the year's final Grand Slam.
Reigning champions Novak Djokovic and Serena Williams have been named top seeds for the Australian Open starting on Monday.
Fourth seed Angelique Kerber's bid for consecutive Grand Slam titles ended when 29th seed Dominika Cibulkova defeated the German 3-6, 6-3, 6-3 in the US Open third round on Saturday.
Images from Day 5 of the US Open in New York on Friday
World No 55 Haase improved to a 2-2 career record against Zverev, including victories in their last two meetings.
Greek teenager Stefanos Tsitsipas slayed another tennis giant on Saturday, saving a match point as he toppled big-serving Kevin Anderson 6-7(4), 6-4, 7-6(7) in a thriller to set up a Rogers Cup final against top seed Rafael Nadal.
Alexander Zverev got the better of older brother Mischa at the Citi Open in Washington on Thursday, winning their first meeting at an ATP Tour event 6-3, 7-5.
Serbia's Novak Djokovic is the top seed in the men's draw which includes five-times US Open champion and 17-times Grand Slam winner Roger Federer as seventh seed - his first time the Swiss has been placed outside the top three in a Grand Slam in over ten years.
Under the lights on the stadium court, Williams smashed 39 winners to defeat Azarenka 7-5, 6-3 in a rematch of the 2016 final, which the Belarusian won.
Serena Williams has been vulnerable this Grand Slam season but unbeaten in the year's first three major championships.
IMAGES from the Australian Open matches played at Melbourne Park on Wednesday
World No 1 Serena Williams kept her Wimbledon title defence on track on Sunday, downing Germany's Annika Beck 6-3, 6-0 with a crushing display of power and booming serves.
The signs that things were going horribly wrong for Roger Federer were laid bare at Roland Garros.
South Korean Chung Hyeon managed to hang around against Roger Federer a little longer this time around, but only just, as the Swiss maestro advanced to the semi-finals of the BNP Paribas Open 7-5, 6-1 on Thursday.
Maria Sharapova's contentious and captivating US Open run came to an end on Sunday when Latvia's Anastasija Sevastova beat her 5-7, 6-4, 6-2 to reach the Flushing Meadows quarter-finals.
Serena Williams enters the Australian Open as a strong favourite to lift the Daphne Akhurst Memorial Cup but is all too aware that a sixth Melbourne Park title has now eluded her for five years.
IMAGES from Day 7 of the French Open, at Roland Garros, on Saturday.
Rafael Nadal swept into the quarter-finals of the Italian Open on Thursday with a ruthless 6-4, 6-1 victory over Canadian teenager Denis Shapovalov. The top seed, who will reclaim the world number one ranking from Roger Federer if he wins his eighth title in Rome, turned in a near-flawless performance, losing only five service points as he honed in on victory in an hour and 22 minutes.
A summary of sports events and persons who made news on Saturday
Naomi Osaka eased into the second round of the Italian Open on Monday with a 6-0, 6-3 victory over former world number one Victoria Azarenka, on a day in which local favourite Roberta Vinci called time on her career.
Top seeded Ash Barty overcame a slow start to defeat Maria Sharapova 6-4 6-1, while Simona Halep battled past Ekaterina Alexandrova 3-6 7-5 6-4 in the second round of the Cincinnati Masters on Wednesday.
Russian sixth seed Anastasia Pavlyuchenkova claimed her third title of the year by beating seventh-seeded Australian Daria Gavrilova in the final of the Hong Kong Tennis Open on Sunday.
The match ended in 52 minutes as Williams played her forehand into the net.
Images from Day 9 of the 2020 French Open at Roland Garros, in Paris, on Monday.
Serena Williams is third on the list of female Grand Slam title winners. She is one of only five women, after Maureen Connolly, Margaret Court, Martina Navratilova and Steffi Graf, to hold all four Grand Slam titles at same time.
As Serena Williams sits out a fourth straight Grand Slam, Simona Halep and Karolina Pliskova will join Caroline Wozniacki in a quest for a major breakthrough in Australia.
A summary of the matches from Day 9 at the French Open.
A summary of sports events and persons who made news on Friday