Japan's Kei Nishikori overcame Daniil Medvedev in the Brisbane International final on Sunday for his first ATP title in nearly three years and the 12th of his career.
Copil, the World No 93, stunned second seed Alexander Zverev of Germany 6-3, 6-7 (6), 6-4 in the day's other semi-final.
Novak Djokovic said on Monday that he might consider skipping the Tokyo Olympics if the two-week sporting festival takes place without spectators.
Images from Saturday's action at the Australian Open.
Johnson to meet Medvedev in Winston-Salem final
Images from Day 4 of the Australian Open in Melbourne on Thursday
Men's governing body ATP on Monday unveiled a revised system for calculating world rankings when the season resumes in August following a five-month suspension due to the COVID-19 pandemic. Traditionally the ATP rankings operates on a formula of 18 best results over 52 weeks but will now cover a 22-month period from March 2019 through December 2020.
It was Novak Djokovic's first match this year after his Australian Open hopes were dashed when he was deported following an 11-day saga revolving around his decision not to have a COVID-19 vaccination.
Top seed Novak Djokovic beat Canadian Felix Auger-Aliassime 7-5, 7-6(1) to reach the semi-finals of the Italian Open on Friday and move within one win of 1,000 career victories.
Novak Djokovic is bidding to win the title for the first time since 2015 and equal Roger Federer's six.
Novak Djokovic sharpened his grasscourt game ahead of next week's Wimbledon by beating Russian Daniil Medvedev 6-4, 6-4 on Friday to reach the Aegon International final on another rain-disrupted day at Eastbourne.
Eight-time Wimbledon champion Roger Federer, who turns 40 this year, takes on Frenchman Adrian Mannarino in round one.
The 11-time champion's loss ended a series of 25 consecutive sets won on his favourite clay as Fognini set up a final showdown against Serbian Dusan Lajovic.
The 'Big Three' of men's tennis have found some "fresh energy" to thwart the charge of younger players on the tour, world number one Novak Djokovic said after setting up yet another title clash against his biggest rival against Rafael Nadal.
Novak Djokovic launched his bid to stay on course for a Golden Slam with a clinical 6-2, 6-2 win over 139th-ranked Hugo Dellien of Bolivia on Saturday, as sweltering conditions in Tokyo took a toll on the players on the opening day of tennis at the Games.
From Slam No 1 to Slam No 21 -- a summary of Nadal's 21 majors.
Favourites Russia Tennis Federation opened their Davis Cup Finals campaign with a resounding victory over Ecuador, Britain began with a win against France and Italy eased into the quarter-finals with a win over Colombia on Saturday.
Melbourne on Friday completed 28 days since the last reported locally-acquired case of novel coronavirus infection.
However, the 33-year-old Spaniard will not know until later on Friday whether his Herculean effort was in vain.
Kyrgios did not face a single break point and hit 18 aces, including two to close out the final.
India's campaign at the US Open came to an end after Rohan Bopanna lost in the men's and mixed doubles, in New York, on Sunday. India's top-ranked men's doubles player and his Canadian partner Denis Shapovalov lost 3-6, 4-6 to 15th seeds Neal Skupski and Jamie Murray of Great Britain in a second round match that lasted 75 minutes.
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.
'I am playing tennis because I love to play tennis'
Novak Djokovic will begin his Australian Open title defence against Frenchman Jeremy Chardy, while reigning women's champion Sofia Kenin meets wild card Maddison Inglis, following the draw for the year's first Grand Slam on Friday.
This year's Australian Open will be allowed to admit up to 30,000 fans a day, around 50% of usual capacity, amid the COVID-19 pandemic.
But for the first time, that golden trio will be having an anxious glance over their shoulders. The past week in London has revealed a new fearlessness in the generation of 20 somethings expected to fill the void when they call it a day.
Images from matches played on Day 4 at the US Open at the Flushing Meadows in New York on Thursday.
Novak Djokovic kicked off his season in style with a 7-5, 7-5 win over Canadian talent Denis Shapovalov on his favourite Rod Laver Arena court on Tuesday before returning to lead Serbia to a doubles victory that sealed their ATP Cup opener 2-1.
List of French Open men's singles champions:
The 21-year-old has now recorded victories over all of tennis's so called 'Big Three' this year, having beaten Roger Federer at the Australian Open and Rafa Nadal in Madrid.
Novak Djokovic won a record-equalling 20th Grand Slam title by after winning this year's Wimbledon drawing level with long-time rivals Roger Federer and Rafael Nadal.
World number one Rafael Nadal has been drawn alongside defending champion Alexander Zverev, Association of Tennis Professionals (ATP) reported.
Novak Djokovic will need to spend some time on the sidelines recovering from a muscle tear that hindered him in the later rounds of the Australian Open, the Serbian said as he celebrated his ninth Melbourne Park title on Monday.
Sumit Nagal immediately set his sights on Thiem who has reached two French Open finals, losing both to Nadal.
Let battle commence, says Djokovic ahead of Nadal showdown
Novak Djokovic is aware of Kei Nishikori's battling qualities having lost twice to the Japanese in 17 career meetings.
Shapovalov will meet Rafael Nadal for a place in the semi-finals.
Badosa beats Fernandez; Swiatek, Halep storm into quarter-finals
Djokovic has never failed to win the tournament after making the semi-finals and he will be heavily favoured to claim a record-extending ninth title at his favourite Slam on Sunday.
Three-time US Open champion Djokovic, who comes into the tournament having won his fifth Wimbledon title, is followed in the seedings by 2017 winner Rafael Nadal.