Coaching during matches is permitted in some women's events, but Grand Slam tournaments are among those which do not allow it.
World number one Simona Halep pulled out of next week's WTA Finals due to a lower back injury.
Italian Camila Giorgi has now beaten the Australian Open champion in each of their three hardcourt meetings.
Rafael Nadal is in contention for the 'World Sportsman of the Year' award alongside six-time Formula 1 World champion Lewis Hamilton, six-time World MotoGP champion Marc Mrquez and six-time FIFA World Footballer of the Year Lionel Messi.
Serena 'out of line' but both sides share blame says King
Venus Williams has pulled out of the upcoming Brisbane International after suffering a 'setback' in training
With no standout favourite in the women's field, it could provide an ideal stage for American Serena Williams to finally end her quest for an elusive 24th Grand Slam title.
A round-up of tennis matches played on Tuesday.
Russia's Anastasia Pavlyuchenkova stands on the threshold of finally delivering the title long predicted
Belarusian ninth seed Aryna Sabalenka held off a spirited challenge from American Alison Riske to win 6-3, 3-6, 6-1 and successfully defend her Wuhan Open title on Saturday.
Swiatek's last defeat on clay came in the WTA 1000 event in Madrid against Australian Barty, who elected not to defend her 2019 French Open title last year due to the COVID-19 pandemic.
IMAGES from the Australian Open on Tuesday.
Images from the matches played on Day eight of the 2018 Australian Open at Melbourne Park on Monday
Images from Day 7 of the 2021 US Open in New York on Sunday.
Olympic organisers say they will not reveal the final torchbearer's identity until the torch arrives in the stadium on live television, watched by billions of spectators.
The start to the 13 Tests long season could not have been better for India. A convincing win in their 500th Test over New Zealand with spinners Ravichandran Ashwin and Ravindra Jadeja weaving their magic on a turning track to hand India a 1-0 lead in the three-match Test series. Pakistan captain Misbah-ul-Haq receiving the Test mace for their meteoric rise to No.1 ranking in cricket's traditional format. Also, football took precedence once again, a struggling Manchester United ran riot at Old Trafford as they beat Premier League champions Leicester 4-1. An outstanding first-half performance by Arsenal helping them beat London rivals Chelsea. Other top teams like Manchester City and Liverpool also taking full points.
Nadal set to face Kyrgios clash in second round
Serena Williams has never been one to approach the net until it is time to exchange post-match pleasantries with an opponent but on Thursday she broke from tradition and it paid off with a trip to the U.S. Open final.
Former world number one Maria Sharapova avenged her US Open loss to Anastasija Sevastova with a 7-6(3), 5-7, 7-6(7) victory over the Latvian in the China Open first round on Saturday.
'We are notifying ticket holders, players and staff that there will be no fans onsite at the AO for five days'.
No complaints but quarantine differentials were a mistake: Zverev
Playing in his first competitive singles match on the ATP Tour since August 5, the 20-times Grand Slam champion showed no signs of rust in his second round win against Lithuanian qualifier Ricardas Berankis.
Summary of sports events and persons who made news on Tuesday
A summary of Thursday's play at the US Open.
'She's always smiling. I mean, we try in our team to smile everywhere. We make so many funny stuff around the court. She likes it'
Fire-fighters went on alert as the mercury crept towards an expected maximum of 44 degrees Celsius (111 F), the highest since Black Saturday bushfires in 2009 that killed about 180 people in the southeastern state of Victoria.
The draw for the first Grand Slam of the season was made on Thursday and the top seeds could face some early tests of their credentials when play gets underway in Melbourne on Monday.
World number one Simona Halep saved three match-points before edging past an inspired Lauren Davis 4-6, 6-4, 15-13 in a thrilling marathon to reach the fourth round of the Australian Open on Saturday.
The United States and Britain had also called for China to provide proof of Peng's whereabouts.
Summary of sports events and persons who made news on Thursday
Ash Barty's bid to end the host nation's long wait for a homegrown Australian Open champion will begin against Ukraine's Lesia Tsurenko
Sindhu said she has to watch out for the Chinese players as well since they have been missing from the circuit for some time.
Images from Day 1 of the Australian Open in Melbourne on Monday.
Serbian Djokovic, who 12 months ago had elbow surgery, won Wimbledon and the U.S. Open in 2018, before lifting this year's Australian Open crown, to add to his tally of Grand Slam singles titles and reclaim top spot in the rankings.
Since exploding onto the tennis scene as a 14-year-old, Serena Williams has achieved everything on a tennis court - but her incredible collection of titles and trophies barely define the imprint the American has left on her sport.
A summary of sports events and sports persons, who made news on Wednesday
A clash of generations will decide the US Open on Saturday with Serena Williams taking a fourth crack at Grand Slam history against teenager Bianca Andreescu, who was not even born when the American lifted her first Flushing Meadows trophy.
But after those events, Federer will take a training break, the paper reported.
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.
