The 22-year-old Australian breezed past the 15-times Grand Slam champion in about one hour and 20 minutes.
World number four Stan Wawrinka has withdrawn from this month's Rogers Cup in Montreal and the Western & Southern Open in Cincinnati due to a knee injury, the Swiss said on Wednesday.
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.
'I don't want to rush anything or put a timeline on my recovery. I'm going to listen to my body and step back on the court to compete when the time is right'
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.
Fewer than half of Americans plan to go to sports events, concerts, movies and amusement parks when they reopen to the public until there is a proven coronavirus vaccine. That includes those who have attended such events in the past, an ominous sign for the sports and entertainment industries hoping to return to the spotlight after being shut down by the pandemic.
Ruud, who did not take kindly to Kyrgios's tweet then about how he had celebrated the victory, said the hot-headed 24-year-old was "completely crazy" and had behaved like an "idiot" on the court.
Kyrgios earned a suspended six-month ban in September for those transgressions but it only applies to the ATP Tour and not the Davis Cup.
The three-time major winner would be given a protected ranking of number two, the Australian Open organisers said
The 90-minute music, dance, and multimedia show featured close to 400 artists and community members from Texas and across the United States.
Naomi Osaka has sacked her second coach in seven months, splitting with Jermaine Jenkins
French Open champion Barty exited the tournament in the last 16 but regained the number one spot after last year's champion Naomi Osaka was also knocked out at the same stage.
Serena's coach said it had been a winding road following the birth of her daughter in 2017 to the kind of peak performance that brought her US Open success in the past.
Big serving Berrettini is having a breakout year, with two titles under his belt, one on grass and one on clay, and is now on the brink of becoming the first Italian male grand slam finalist in more than 40 years.
The explosive and temperamental 24-year-old Kyrgios has a history of notorious outbursts and is being investigated for potential rule violations after calling the ATP Tour "corrupt" during the US Open last week.
The ruthless American needed less than an hour to defeat Sharapova 6-1, 6-1 and notch her 19th consecutive win over the Russian in what some charitably dub a "rivalry."
Earning a dream Grand Slam debut for himself, Indian tennis player Sumit Nagal set up a US Open first round clash against the legendary Roger Federer, one of the greatest players of all-time, on Monday.
Wimbledon finalists Novak Djokovic and Roger Federer are on a semi-final collision course at the US Open after they were placed in the same half of the draw.
It will be the 22nd career match-up between the two long-time rivals, who somehow have avoided each other at the US Open throughout their long careers.
The 32-year-old pulled out of the doubles event at the US Open to focus on his singles comeback after undergoing career-saving hip resurfacing surgery.
A difficult few months saw her fail to win a tournament, lose her number one ranking and crash out of Wimbledon in the first round.
This will be her first appearance at the tournament since she was ousted in the second round in 2017.
Andy Murray will play in the singles at next week's Winston-Salem Open as he continues his comeback from hip surgery.
It was Roger Federer's fastest defeat since losing to Franco Squillari in 54 minutes in Sydney in 2003.
The 32-year-old has not played singles since losing in the first round of the Australian Open in January to Spain's Roberto Bautista Agut, after which he underwent hip resurfacing surgery in a bid to salvage his career.
Olympic champion Andy Murray restored some order at the Western & Southern Open by cutting down South African giant Kevin Anderson to reach the quarter-finals on an upset-filled Thursday in Cincinnati.
'I know earlier in the tournament I said something in kind of a bad way and now I'm saying it in a good way: That it's because of your energy that I'm in the final'
Man of many faces, Medvedev now a Grand Slam finalist
Medvedev whips Dimitrov to enter US Open final
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.
US Open: Serena ready for Svitolina challenge
Four years ago Berrettini was playing a Futures event in Italy and on Wednesday became the first Italian man since Corrado Barazzutti 42 years ago to reach the US Open semi-finals.
Fiery Australian Nick Kyrgios mostly kept his cool en route to a 6-4, 6-2, 6-4 dismantling of Antoine Hoang in their second round clash at the US Open on Thursday. The 28th seed had a row with the umpire even before the match started but avoided a full scale meltdown to reach the third round at Flushing Meadows for the fourth time.
'I don't mind when he misbehaves. Obviously, I don't like the bad language. It's just when he doesn't try to play tennis, when he doesn't try to win then I think the umpire needs to step in. I think in this situation, default him on the spot, rather than suspend him'
Australia's Nick Kyrgios could find himself in hot water again after accusing men's tennis governing body ATP of being "corrupt" following his US Open first round victory.
The eight men to watch during the US Open which starts on Monday.
Halep's near-flawless display at the All England Club marked a spectacular return to form after her world ranking dropped from first to seventh between mid-January and July.
Summary of sports events and persons who made news on Friday
After losing the first set, Medvedev changed his approach midway through the second set, the Russian going for broke with pretty much every shot, particularly on second serve.
World number one Naomi Osaka will "probably" defend her US Open title, even if it means defying her doctor's orders.