Novak Djokovic has declined to disclose his vaccination status despite everyone at Melbourne Park needing to be inoculated against COVID-19.
Images from the men's singles fourth round matches at the Australian Open, on Sunday.
Players competed at empty stadiums at Melbourne Park through the five-day lockdown but reduced capacity crowds of 7,477 have been permitted in each of Thursday's two sessions and the same number for the singles finals sessions on Saturday and Sunday.
Federer displayed his trademark silky movement and said the knee had held up during a two-hour 24 minute duel.
Roger Federer said his recovery from two surgeries on his left knee earlier this year has taken longer than expected and he is unsure whether he will be ready for the Australian Open.
Rafael Nadal returns to the US Open for the first time in three years short of match practice and with big question marks about his fitness but few people will dismiss the Spaniard's chances of claiming a record-extending 23rd Grand Slam title.
Serena Williams will be wary of another semi-final slip-up when she takes to the Arthur Ashe Stadium court on Thursday to face 10th seed Karolina Pliskova for a spot in the US Open final.
In last year's quarter-finals at the All England Club, Federer saved three match points before edging out Cilic in five sets and the closeness of that match is comforting for the Croat.
Third seeds Raja and Sharan got the better of second seeds Paes and Lipsky 6-2, 6-3 in a lop-sided semi-final.
While the 19th seed Latvian may be disappointed with the outcome, Sevastovoa said she left her first Grand Slam semi-final with a sense of accomplishment.
Novak Djokovic suffered his first defeat of the new season in the Qatar Open semi-finals on Friday, losing in three sets to Spain's Roberto Bautista Agut.
Ronaldo got involved in ball kid duties while watching world number one Novak Djokovic's opening match against John Isner of America as the tennis ball bounced into the stands near the first row where he was sitting.
Ana Ivanovic and Caroline Wozniacki hit the streets in Auckland to play some street tennis.
Former world number one Andy Murray's quest for a first ATP title in over two years ended in defeat at the hands of top seed Aslan Karatsev at the Sydney Tennis Classic on Saturday, with the Russian easing his way to a 6-3, 6-3 win.
Rafael Nadal won two Grand Slams this year -- the French Open and the US Open -- to move within one of Roger Federer's record of 20 titles.
* Swiatek started playing tennis in an attempt to emulate her older sister, who competed briefly on the junior circuit.
Zverev made more headlines off the court than on it last year.
Stan Wawrinka has refused to be drawn into comparisons with the 'Big Four' of tennis- Roger Federer, Rafael Nadal, Novak Djokovic, and Andy Murray-despite winning his third Grand Slam title at US Open.
After losing the first set, Medvedev changed his approach midway through the second set, the Russian going for broke with pretty much every shot, particularly on second serve.
'He was a better player I think in important moments.'
Second seed Novak Djokovic outclassed Roger Federer in straight sets to enter the final of Australian Open in Melbourne on Thursday. Seven-time champion Djokovic started off slowly before he took complete control to register an emphatic 7-6, 6-4, 6-3 victory in the first semi-final.
Shapovalov will meet Rafael Nadal for a place in the semi-finals.
Prajnesh, India's top-ranked singles player at 122, downed the local wild card Jason Kubler 7-5, 6-3 in the first round
The 36-year-old Australian Open champion arrived in the Dutch port city at the weekend knowing a run to the semi-finals will move him ahead of Rafael Nadal in the ATP standings.
Kyle Edmund has the most destructive forehand in tennis and it can power him into the world's top 10, according to three-times Australian Open champion Mats Wilander.
Roger Federer is one win from becoming the oldest world number one in ATP Tour history after beating Philipp Kohlschreiber 7-6(8), 7-5 in the last 16 of the Rotterdam Open on Thursday.
Pospisil and Shapovalov joined forces in the deciding doubles rubber against Jordan Thompson and John Peers, winning 6-4, 6-4 in front of several hundred delirious Canadian fans.
A very different Australian Open comes to a familiar end on Sunday as Novak Djokovic looks to thwart another challenge to his Melbourne Park dynasty from the latest Grand Slam aspirant in Daniil Medvedev.
The 20-time Grand Slam champion has not played a tournament since his Australian Open semi-final exit against Novak Djokovic last year, undergoing two knee surgeries since.
The 20-times Grand Slam champion said he was having some "unpleasant moments" but was hoping to feel better soon.
Kei Nishikori swept aside Rafael Nadal in the quarter-finals of the Rogers Cup.
The Russian can qualify for the main draw at Wimbledon by reaching the semi-final of either the Madrid or Rome tournaments.
