Daniil Medvedev, the 2021 champion, will need to shake off a run of poor form if he is to mount a challenge.
Defending champion Djokovic fired his 15th ace on match point to defeat Querrey but his serve had been an issue earlier in their second-round encounter.
Frances Tiafoe sees huge strides for American men after another deep US Open run. The ebullient fan favourite was already looking to the future.
World men's number one Jannik Sinner has been cleared of fault or negligence by an independent tribunal after failing two drug tests in March, the International Tennis Integrity Authority (ITIA) said on Tuesday.
Novak Djokovic overcame a battling Marin Cilic 6-4, 3-6, 6-3 to reach his sixth Cincinnati Masters final on Saturday while Roger Federer enjoyed a less-taxing route to the title match after his semi-final opponent David Goffin retired with a shoulder injury.
The 30-year-old said she was more nervous before facing world number one Iga Swiatek in the quarter-finals, a match she won in straight sets.
Reader Anand Nijampurkar sent us this picture from Cincinnati.
Aryna Sabalenka's return to top spot in the WTA rankings after leapfrogging Iga Swiatek has set up a thrilling end to the season, with next month's WTA Finals in Saudi Arabia likely to prove decisive in the race to end the year as world number one.
Third seed Alexander Zverev produced a near-flawless display to outclass former champion Holger Rune 6-3 7-6(4) on Saturday and return to the Paris Masters final after a gap of four years.
Ashleigh Barty stunningly lost her chance to regain the number one world ranking when the Australian was beaten in straight sets by Russian Svetlana Kuznetsova.
Novak Djokovic's bid to add a 100th singles title to his trophy cabinet on Sunday was dashed after he was beaten 7-6(4), 6-3 by world number one Jannik Sinner in the Shanghai Masters final on Sunday.
Reader Anand Nijampurkar sent us this picture from Cincinnati.
Sabalenka spent eight weeks at the summit last year before Swiatek overtook her with a victory at the season-ending WTA Finals and the Belarusian hopes for a longer stay as 'N1'.
Iga Swiatek has been not been at her world-beating best in the months leading up to the U.S. Open but the Pole has both the talent and mentality to lift her game for the final Grand Slam of the year, tennis great Chris Evert said.
Roger Federer's hopes of adding to his record Grand Slam haul got a boost as he beat Spain's David Ferrer 6-3, 1-6, 6-2 to win the Western and Southern Open title in Cincinnati on Sunday in the last key U.S. Open tune-up event.
Frances Tiafoe launched into a foul-mouthed tirade directed at a chair umpire after the American received a time violation and then lost to Roman Safiullin in the third round of the Shanghai Masters on Tuesday.
Carlos Alcaraz has vowed to learn from the incident and ensure it doesn't happen again
Mardy Fish quit in the third set because of a back injury, allowing Andre Agassi to advance to the second round.
Gauff split from coach Brad Gilbert and flipped the script weeks later, however, winning her second WTA 1000 title last month at the China Open before reaching the Wuhan Open semis.
World number four Stan Wawrinka has withdrawn from this month's Rogers Cup in Montreal and the Western & Southern Open in Cincinnati due to a knee injury, the Swiss said on Wednesday.
Carlos Alcaraz will be backed to extend his winning run at the Grand Slams to 16 matches following triumphant French Open and Wimbledon campaigns.
Top seed Aryna Sabalenka shook off a second-set blip to win three back-to-back Wuhan Open titles after beating Chinese fifth seed and home favourite Zheng Qinwen
Fifth seeds Leander Paes and Radek Stepanek were eliminated from the ATP Cincinnati Masters following their defeat to Vasek Pospisil and Jack Sock, in Cincinnati on Wednesday.
Reader Viju Kulkarni Patil sent us a picture of Mahesh Bhupati from the USA.
Novak Djokovic wore down Lucas Pouille after an even first set, dispatching the Frenchman 7-6(2), 6-1 in a Cincinnati Masters quarter-final in Ohio on Friday.
Reader Brahmanandam Somanchi sent us this picture from Cincinnati.
Jannik Sinner will hope to block out a rocking home crowd on Sunday when he faces Taylor Fritz in the US Open final at Flushing Meadows, where the 12th seed will be bidding to become the first American man in 21 years to win a Grand Slam singles title.
Reader Rahul Rodrigues sent us this picture from Cincinnati.
The two cases shocked the tennis world with many fuming at how they were handled by the authorities.
Leander Paes and Stanislas Wawrinka shocked 2014 Wimbledon champions Vasek Pospisil and Jack Sock 7-6(4), 3-6, 10-3 to make it to the doubles quarter-finals at the ATP Masters Western and Southern Open, in Cincinnati, on Tuesday.
World No 55 Haase improved to a 2-2 career record against Zverev, including victories in their last two meetings.
Maria Sharapova battled to a 6-4, 1-6, 6-2 victory over in-form Russian compatriot Svetlana Kuznetsova to reach the second round of the Cincinnati Masters on Tuesday.
Adlakha was transported to UC Medical Center where he was in critical condition and was pronounced dead two days later.
The Indian ace was beaten in straight sets by Japan's Akiko Morigami.
Serena Williams rallied past Denmark's Caroline Wozniacki on Saturday to reach the Western and Southern Open final in Cincinnati where she will face Ana Ivanovic, an upset winner over French Open champion Maria Sharapova.
In the semi-finals, Federer beat holder Andy Murray 6-2, 7-6 while a rejuvenated Djokovic hammered former world number one Rafael Nadal 6-1, 6-4.
Rahul Ramagude plays cricket from a wheelchair. Geeta Chauhan is a wheelchair racer with Olympic aspirations. Siddanth uses technology to enhance movement coordination of mentally challenged children. On the International Day of the Disabled, A Ganesh Nadar meets three youngsters making a difference.
The gap between the leading four, which also contains Rafa Nadal and Andy Murray, and the chasing pack was again evident as Djokovic beat Argentine Juan Martin del Potro 6-3, 6-2 before Federer saw off fellow-Swiss Stanislas Wawrinka 7-6, 6-3.
American Madison Keys overcame late leads by Svetlana Kuznetsova in both sets to defeat the Russian for the Cincinnati Masters title on Sunday.
Images from the US Open men's singles first round matches, at Flushing Meadows, New York, on Tuesday.
