Aryna Sabalenka of Belarus and Paula Badosa of Spain, earned second-round wins
American Sofia Kenin counter-punched her way back from a set down against Garbine Muguruza to win her first Grand Slam title at the Australian Open with a 4-6, 6-2, 6-2 win in Melbourne on Saturday.
Fritz delivers as US win inaugural United Cup crown
Next up for the 35-year-old will be another American in 39th-ranked Tommy Paul with a potential semi-final clash against top-seeded Russian Daniil Medvedev, who he defeated in the Australian Open final from a two-sets deficit.
The 28-year-old said beating American great Williams was the finest win of her career, outstripping her upset of world number one Ash Barty at last year's US Open.
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.
Pole says she feels much better prepared to handle the pressure of her latest career milestone.
Halep finds groove to reach Prague semi-finals.
Serena Williams has defeated her compatriot in four straight matches since a defeat in the quarter-finals of the 2013 Australian Open.
Images from Day 6 of the 2023 Australian Open at Melbourne Park on Saturday.
Russia's Daniil Medvedev remarkably reached his ninth final of the season as he defeated Stefanos Tsitsipas 7-6(5), 7-5 at the Shanghai Masters on Saturday.
A summary of Sunday's action at the US Open.
Images from Day 2 of the Wimbledon tennis championships in London, on Tuesday.
World number one Naomi Osaka was beaten in her opening match at the Dubai Duty Free Tennis Championships on Tuesday, losing to France's Kristina Mladenovic 6-3, 6-3 on her return to competitive action after winning last month's Australian Open.
Prajnesh, India's top-ranked singles player at 122, downed the local wild card Jason Kubler 7-5, 6-3 in the first round
'This was the first time that I played points and that was too much for me today'
Images from Day 2 of the Australian Open in Melbourne on Tuesday
Twice winner Maria Sharapova and reigning champion Flavia Pennetta advanced to the third round of the BNP Paribas Open on Saturday, though in sharply contrasting fashion.
Images from Day 2 of the 2022 Australian Open in Melbourne on Tuesday.
Images from Day 3 of the French Open matches played at Roland Garros on Tuesday
A summary of sports events and persons who made news on Sunday
Images from Day 7 of the 2021 French Open at Roland Garros in Paris on Saturday.
Images from matches played on Day 4 at the US Open at the Flushing Meadows in New York on Thursday.
Images from Day 9 of the 2020 French Open at Roland Garros, in Paris, on Monday.
Images from Day 3 of the Australian Open in Melbourne on Wednesday.
IMAGES from Day 3 of the US Open in New York on Wednesday.
Former world number one Garbine Muguruza was beaten 7-5, 6-4 by Aryna Sabalenka in the China Open second round on Tuesday while an ailing Jelena Ostapenko lost 6-0, 6-0 to Wang Qiang.
Images from Day 3 of the Australian Open in Melbourne on Wednesday
Images from the third day at the US Open, the final Grand Slam tournament of the year, in New York, on Wednesday: