Former world number one and two-time Grand Slam winner Simona Halep announced her retirement from professional tennis on Tuesday after losing in the first round at her home event in Cluj.
Two-time Wimbledon champion Petra Kvitova will return to action this month after a 15-month maternity break, with the Czech set to play in three tournaments in the United States.
"He has lost only four or five matches in the past year, so it's crazy. I know people say who's better out of us. They say Jannik is better or some say me. It's all discussion."
World number one Jannik Sinner will not defend his ATP 500 title in Rotterdam as the Italian's "body needs time to rest" after winning the Australian Open, tournament organisers announced Monday.
Double Australian Open champion Jannik Sinner set his sights on mastering clay and grass courts to make himself a complete player after the Italian claimed his third hardcourt Grand Slam title on Sunday.
The 23-year-old came through a tense battle between the world's top two players 6-3, 7-6 (7/4), 6-3 on Rod Laver Arena, raising his arms in the air and looking to the sky in celebration.
The victory earned the Italian world number one his third Grand Slam crown.
The Australian Open, the first Grand Slam of the year, ends on Sunday when defending champion Jannik Sinner faces Alexander Zverev for the men's title. AFP looks back on five memorable storylines from the past two weeks in Melbourne:
World number one Novak Djokovic admitted he was "worried" about his French Open title defence after falling to 44th-ranked Czech Tomas Machac in the Geneva semi-finals on Friday.
Djokovic took a wild card to play in Geneva in a bid to rescue an alarming dip in form ahead of Roland-Garros next week.
Nadal, the record 14-time champion at Roland Garros, is unseeded this year after injury saw his ranking plummet to 276.
Novak Djokovic celebrated his 37th birthday on Wednesday with the 1,100th win of his career as he gears up for his French Open title defence, progressing to the Geneva quarterfinals.
He said if Nadal was in the French Open draw, he could not be ruled out, despite his injury problems and growing competition from a younger generation.
His match with Hanfmann will resume Tuesday and the winner will face Djokovic on Wednesday.
World number five Zverev, also Foro Italico champion in 2017, comfortably won his sixth Masters 1000 title by beating Nicolas Jarry 6-4, 7-5 and is eyeing glory at the Paris clay-court Grand Slam, which gets underway next weekend.
In front of a packed centre court crowd Swiatek won her 36th match of the year and became the first woman since Serena Williams in 2013 to win at Madrid and Rome in the same season.
Iga Swiatek swept past Coco Gauff to reach the Rome Open final on Thursday where Aryna Sabalenka will stand in her way of a third title and her bid to match a Serena Williams record.
Djokovic said that his subdued performance on a court where he has won six titles might have been due to the blow suffered while greeting fans on Friday night.