Top seed Novak Djokovic beat Jenson Brooksby 1-6, 6-3, 6-2, 6-2 on Monday to book a quarter-final encounter with Italian sixth seed Matteo Berrettini in the US Open.
The Serbian star is seeking to win his fourth major title this season.
He has equaled the record of winning 20 grand slam titles with Swiss legend Roger Federer and Spanish maestro Rafael Nadal.
Alexander Zverev and Belinda Bencic want a trophy in their hands to go with the gold medals they had around their necks.
The Tokyo Olympics tennis champions both moved into the quarterfinals of the U.S. Open (Flushing Meadows) on Monday, getting a step closer to their first Grand Slam titles.
Zverev beat Jannik Sinner 6-4, 6-4, 7-6 (7) for his 15th straight victory, the No. 4 seed from Germany started that run in Japan, carried it through a title in Cincinnati and then kept right on going at the U.S. Open, where he was the runner-up to Dominic Thiem last year.
The German player who won gold at the Olympic Games in Tokyo 2020, set a date in the next round with the winner of the twenty-second encounter of the American Riley Opelka and the forty-sixth of South Africa, Lloyd Harris.
Bencic also had her best result in a major at the U.S. Open, reaching the semifinals in 2019 in her last appearance, the 24-year-old from Switzerland is a victory away from getting back there after beating Polish 2020 French Open champion Iga Swiatek 7-6 (12), 6-3.
The 11th-seeded Bencic pulled out the lengthy first-set tiebreaker, then took the second set in 43 minutes only about 20 more than the tiebreaker lasted.
Bencic, who reached the semi-finals in Flushing Meadows in 2019, will next face 18-year-old British qualifier Emma Radokano, who won an easy 6-2 6-1 victory over American Shelby Rogers, who in turn eliminated Australian Ashleigh Barty ranked number one in the world.
Fourth-seeded Karolina Pliskova mounted a strong defensive effort to send Russian Anastasia Pavlyuchenkova packing 7-5 and 6-4 in the fourth round of the US Open on Monday, keeping on track her bid for her first Grand Slam title.
Next, she will face either Greek Maria Sakkari or Canadian Bianca Andreescu.