Zverev cruised past home favorite Roberto Bautista Agut 6-2, 6-2, while Sabalenka triumphed over qualifier Anna Blinkova 6-3, 6-4.
Alexander Zverev into ATP Finals semis after straight sets win over Carlos Alcaraz
A round-up of all the tennis action from around the globe.
Sweden and Novak Djokovic's Serbia took the two best runners-up spots and a place in the last eight by virtue of their better match win-loss records among the second placed sides throughout the group stages.
Bopanna had scripted history in March to become the oldest ATP Masters 1000 champion when he and Ebden won the BNP Paribas Open.
'Every time I step onto this court I'm playing for history.'
Here is what you need to know about the year's Australian Open:
Cilic had never made it past the quarters in Paris but has now made the semis or better at all four majors.
World number one Iga Swiatek blasted past American Danielle Collins 6-3, 6-0.
A stellar season thus far has propelled the 43-year-old into the top 15.
...And Alcaraz continues hat-trick quest
How the winners celebrated on Day 11 of the French Open.
Carlos Alcaraz got his grasscourt campaign up and running with a 6-4, 7-6(4) victory over Australian Adam Walton
Daniil Medvedev fired Russia to victory in the $7.5 million ATP Cup with a dominant performance against Italy in Melbourne on Sunday.
Earlier, title holder Borna Coric beat American Sebastian Korda 7-6 (5), 6-4, while another home hope Taylor Fritz survived a first-set thriller to beat Czech Jiri Lehecka 7-6 (14), 6-2.
WTA chief promises 'strong reactions' to ban on Russian, Belarusian players
Learner Tien is the youngest American man to reach the third round of the Australian Open since an 18-year-old Pete Sampras in 1990.
The duo of Rohan Bopanna and Denis Shapovalov crashed out of the semi-finals of the men's doubles event at the ongoing St Petersburg Open St Petersburg on Saturday.
Images from the second day at the US Open, the final Grand Slam tournament of the year.
Fonseca cruised through the first set before Fearnley found his groove in the second to level the match on a windy day in the California desert.
IMAGES from the US Open matches played on Day 1 at the Flushing Meadows in New York on Monday.
Novak Djokovic was stunned 7-6(4), 6-2 by Matteo Berrettini in the Qatar Open first round on Tuesday as the Italian enjoyed his first win over the former world number one.
Images from the US Open men's singles second round matches, at Flushing Meadows, New York, on Wednesday.
Coco Gauff forgot to bring her rackets to the court but reminded her rivals of her French Open title ambitions with a commanding win while Daniil Medvedev lost his composure on a cold and blustery Tuesday as he crashed out in the opening round.
After a mature performance against ninth seed David Goffin, the 19-year-old set up an intriguing last-eight showdown with world number one Rafael Nadal.
It was only Alcaraz's third tournament on grass, but the way he marched through the draw augurs well for his prospects at Wimbledon, where he will be seeded number one.
Carlos Alcaraz suffered a shock 6-1, 7-5 defeat against Norway's Casper Ruud in his opening match at the ATP Finals
Safiullin upsets Muller, Moutet through in Mallorca
Jannik Sinner made it two wins out of two at the ATP Finals as he fought off Taylor Fritz in a high-octane clash inside the Inalpi Arena on Tuesday.
Images from the US Open matches played at Flushing Meadows on Saturday
The Americans found their rhythm to wrap up a final-day victory
Alcaraz topped the Red Group and will face Green Group runner-up Novak Djokovic in a mouth-watering semi-final.
A defiant Rafael Nadal won an all-Spanish clash of the generations taming teenager Carlos Alcaraz 6-4, 4-6, 6-3 to stretch his winning run to 20 matches on Saturday and clinch a place in the Indian Wells final. He will take on American Taylor Fritz in Sunday's championship in the California desert where a victory would see the 35-year-old equal Novak Djokovic's record of 37 ATP Masters 1000 titles.
Fourth seed Grigor Dimitrov survived a scare against Pierre-Hugues Herbert before holding his nerve to win 3-6, 6-2, 6-4 in the second round of the Monte Carlo Masters on Tuesday, while Dominic Thiem edged out Russian youngster Andrey Rublev.
World number one Jannik Sinner delivered a flawless performance to pulverise Czech Jiri Lehecka in straight sets in little more than 90 minutes on Saturday.
Novak Djokovic was shocked by Botic van de Zandschulp 6-2, 3-6, 6-1 in the second round of Indian Wells on Saturday as the Serbian suffered an early exit at the hands of a tournament lucky loser for a second consecutive year.
Goran Ivanisevic, Djokovic's coach, was greeted with jeers from fans when he broke the news courtside.
World number one Carlos Alcaraz faces a potential quarter-final clash with old foe Jannik Sinner in his US Open title defence, and American Coco Gauff is on a collision course with defending champion Iga Swiatek on the women's side.
Sinner won in Cincinnati this week to claim his fifth title of a breakout season before the revelation that he avoided a ban over two positive tests
Talk about a man in a hurry -- 10th seed Ben Shelton required just 55 seconds to finish off Australian Rinky Hijikata and reach the Wimbledon third round on Friday.
