The defending champion from Serbia, a four-time winner of the Shanghai Masters who had reached the semifinals in all eight of his appearances at the tournament, lost to sixth-seeded Stefanos Tsitsipas 3-6, 7-5, 6-3 on Friday in the quarterfinals.
Del Potro has not played since June, when he fractured the patella in his right knee for the second time in nine months during the Queen's ATP 500 tournament in London, reports Xinhua news agency.
Ashleigh Barty was the first Australian to win the French Open in 46 years and is now aiming to become the first Australian woman to end the season with the number one ranking since Margaret Court in 1973.
The Olympic Channel says Osaka, who plays under a Japanese flag in WTA events and in the Fed Cup, has told national broadcaster NHK that she has started proceedings to choose Japanese citizenship.
Top-seeded Djokovic is on a 24-0 sets winning streak in Asia dating back to last year's Shanghai Masters. He won his inaugural appearance at the Japan Open last week without losing a set.
The second-seeded Federer, who is bidding to win a third Shanghai Masters title, dominated in the first set, but was tested in the second.
The Indo-Canadian pair notched up a 6-1, 6-4 win over Khachanov and Rublev in the opening round.
"Confirmed: @andy_murray will return to compete at the #AusOpen in 2020," Australian Open organisers tweeted on Tuesday afternoon while also adding in a statement that the Scot will be given a protected ranking of No.2 when he returns to the main draw.
Swiss tennis star Roger Federer will take on Germany's Alexander Zverev in an exhibition duel as part of a Latin America tour.
India's tennis ace Sumit Nagal has climbed up to a career-best 129 in the latest ATP Rankings.
Osaka bounced back from a set down to top-seeded Ash Barty, cruising through the final two sets to defeat the top-seeded Australian 3-6, 6-3, 6-2 and accomplish her goal of returning to winning form on the tour's Asian leg.
Playing in the Japanese capital for the first time, Djokovic beat Australian qualifier John Millman 6-3, 6-2 in the final of the Japan Open on Sunday, marking the 10th time the Serbian has lifted a trophy on his main draw debut at a tour-level event.
Tennis legend Roger Federer on Saturday asked his fans to suggest a new profile picture for his Twitter account.
India's ace tennis player Sumit Nagal reached the semifinals of the ATP Challenger Campinas as he registered a straight-set victory over 13th seed Cerundolo.
Andy Murray's impressive run in the China Open came to an end in the quarterfinals, but Naomi Osaka and Ashleigh Barty proceeded to the semis in the women's singles.
In the men's draw, world number 19 John Isner fired off 21 on his way to a hard-fought 7-6 (3), 7-5 win over British qualifier Daniel Evans in just under two hours.
Speaking at the World Economic Forum here, Sania, who has three doubles and an equal number of mixed doubles Grand Slams to her credit, reflected on the challenges she faced during a panel discussion on women and leadership.
Andy Murray is on track in his comeback as he entered the quarterfinals of the China Open with a straight-set win over fellow countryman Cameron Norrie.
World No. 3 Elina Svitolina was made to sweat but avenged her loss in Miami this year against China's Wang Yafan, needing two tie-breaks to move into the round of 16 with a straight-sets 7-6 (5), 7-6 (1) victory
Djokovic playfully tried to get one of them to budge and even said that he came close to doing so.
Nagal figured in the government's Target Olympic Podium Scheme (TOPS), receiving financial support for some time but was later dropped.
India's Sumit Nagal has made a jump of 26 places to achieve a career-best ranking of 135 in the latest rankings issued by ATP.
India's tennis ace Sumit Nagal won his first ATP Challenger title of the season as he beat Facundo Bagnis of Argentina.
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