American Madison Keys overcame late leads by Svetlana Kuznetsova in both sets to defeat the Russian for the Cincinnati Masters title on Sunday.
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.
World number one Jannik Sinner's bid for a second Grand Slam title continued to gain momentum as he thumped Christopher O'Connell 6-1, 6-4, 6-2 on Saturday to reach the US Open fourth round.
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.
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.
Rohan Bopanna and Sania Mirza bowed out of the Cincinnati Masters after losing their quarter-final and semi-final matches with their respective partners in the men's and women's doubles.
Nadal, who got a first-round bye, defeated Richard Gasquet 6-3, 6-4 to advance.
Top seed Ash Barty rallied from a set down to power into the semi-finals of the Cincinnati Masters on Friday.
Close to half of women soccer fans in England and Wales have personally experienced sexist or misogynistic abuse at matches but most have never reported it to authorities, a new study by anti-discrimination charity Kick It Out revealed on Wednesday.
Spanish fourth seed Garbine Muguruza fine-tuned her preparations for this month's U.S. Open by crushing Simona Halep 6-1, 6-0 in the Cincinnati Open final on Sunday.
Victoria Azarenka won a showdown between the world's two top players by beating number one Serena Williams in a three set 2-6, 6-2, 7-6 thriller in the final of the Western and Southern Open on Sunday.
World number one Serena Williams was at her lethal best as she crushed Romanian Simona Halep 6-0, 6-4 to romp into the semi-finals of the Western and Southern Open on Friday.
The top seeds scored a straight sets victory over the Colombian-Chinese pair of Catalina Castano and Meng Yuan.
'I'm not going to overplay. I'm not going to do anything different because I'm playing Novak. I'm going to play my game, play within myself and trust that if I play well, it's enough.' - US Open
They were beaten by the top-seeded pair of Maria Elena Camerin and Gisela Dulko.
The seventh-seeded Bulgarian advanced to his eighth ATP World Tour Masters 1000 quarter-final with a 6-3, 7-5 victory over Del Potro, who struggled with the intense heat in the closing stages of the one hour, 39 minute match.
Serena Williams finished her last U.S. Open tune-up in style by blowing away Serbian Ana Ivanovic 6-4, 6-1 to win her first title at the Western and Southern Open in Cincinnati on Sunday.
Williams playing at a 'better level' after injury-hit start to season
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.
Russia's Maria Sharapova will face Serbia's Jelena Jankovic in the Cincinnati Open final after the pair enjoyed solid victories in their semi-finals on Saturday. Sharapova recovered from a poor start to beat fellow-Russian and world number two Vera Zvonareva 2-6, 6-3, 6-3 to reach her fourth final of the season while Jankovic beat Germany's Andrea Petkovic 7-6, 6-1.
World number two Rafa Nadal scraped into the quarter-finals of the Cincinnati Open after beating fellow Spaniard Fernando Verdasco 7-6, 6-7, 7-6 in a fierce battle on Thursday but his rivals all had comfortable paths into the last eight.
Olympic and Wimbledon champion Andy Murray picked up where he left off in Rio by drubbing Argentina's Juan Monaco to take his place in the third round of the Western & Southern Open in Cincinnati on Wednesday.
Serena Williams' scored a ruthless 6-3, 6-1 win over Bethanie Mattek to advance to the quarter-finals of the Cincinnati Open
The five top contenders for the men's title at the US Open.
Nick Kyrgios has been fined $113,000 by the ATP for arguing with the chair umpire and smashing two rackets during his second-round loss at the Cincinnati Masters.
Five top contenders for the women's title at the US Open.
Top-seed Jelena Jankovic and second seed Caroline Wozniacki suffered surprise third-round exits in the Cincinnati Open on Thursday.
Reader Abhishek Sikri sent us a picture of Rohan Bopanna from the USA.
The Indian ace beat Anna-Lena Groenefeld 6-4, 6-3 in the first round of the Western and Southern Financial Group Women's Open
Rafa Nadal urged tournament organisers to make more consistent surfaces for hard court events after easing past American Taylor Dent 6-2, 7-5 to make the third round of the Cincinnati Masters on Wednesday.
Mahesh Bhupathi and Max Mirnyi advanced to the men's doubles quarter-finals of the Cincinnati Masters after getting a walk over. Fourth seeds Bhupathi and Mirnyi were scheduled to play against Americans John Isner and Sam Querry, who withdrew from the contest due an ankle injury to Isner.
The former world number one plans to play more of a full schedule next year and will work to improve on her serve, which she said let her down particularly in the first and third sets.
Rafael Nadal continued his perfect run on the North American hardcourts taming Czech Tomas Berdych 7-5, 7-6 (4) at the Western and Southern Open on Saturday to setup a final showdown with big-hitting American John Isner.
World number one Dinara Safina will take on a rejuvenated Jelena Jankovic in the final of the Cincinnati Open after hugely contrasting wins on Saturday. Russian Safina stormed into her eighth final of the year with a 6-2, 6-0 demolition of Italian Flavia Pennetta, while fifth seed Jankovic saved four match points to beat fourth seed Elena Dementieva 7-6, 0-6, 7-6 after two hours and 46 minutes.
The bull-like Alcaraz, playing only his second Grand Slam final compared to Djokovic's record 35, put on a show
Serena Williams, coming off a double Olympic gold medal-winning performance in London, said she was feeling the pace of a hectic schedule after a lethargic display in her 6-3, 6-0 win over Urszula Radwanska on Thursday.
World number one Dinara Safina scrambled past Italian Roberta Vinci 2-6, 7-5, 6-4 to reach the third round of the Cincinnati Open on Tuesday. World number 46 Vinci served for the match at 5-4 in the second set but her nerve failed her at the crucial time.