Andy Murray and Novak Djokovic have called for changes to the Australian Open schedule after several late finishes in Melbourne.
Three-time grand slam champion Murray bowed out of the season's opening major on Saturday following a four-set defeat by Roberto Bautista Agut in round three.
The 35-year-old arrived in the clash having already spent over 10 hours on court across his victories over Matteo Berrettini and Thanasi Kokkinakis.
Murray's 4:05am local time finish in the latter match was the third-latest in tennis history after he recovered from two sets down to deny the home favourite in a thrilling clash that took five hours and 45 minutes to settle.
The Briton subsequently voiced his concerns with scheduling, which tournament director Craig Tiley has no plans to change.
He reiterated those worries after defeat by number 24 seed Bautista Agut, suggesting the Australian Open could follow the trend set by another of the sport's major events.
"I'm sure if you went and spoke to some sleep experts and sports scientists – the people that actually really know what's important for athletes to recover – they would tell you that sleep is the number one thing, that that's the most important thing," he said.
"Finishing matches at four in the morning isn't good for the players. I would also argue it's not good for the sport, anyone involved in it. I do think there's some quite simple things that can be done to change that.
"I think the US Open went to playing two matches in the day session. That would stop the day matches running into the night session starting too late.
"I think that's quite a simple one that you could look at. You'd still get quality matches during the day. The people who bought ground passes would get to see more of the top players, which would be excellent for them.
"I think if you did that, you could also potentially bring the night sessions slightly earlier, as well, like 6:00 or 6:30. That time, those few hours, can make a difference to the players."
Nine-time Melbourne champion Djokovic, who overcame injury to defeat Grigor Dimitrov in straight sets, concurred with Murray.
"I think that players' input is always important for tournament organisation. Whether it's decisive, we know that it's not, because it comes down to what the TV broadcasters want to have," Djokovic said. "That's the ultimate decision maker.
"I would agree with [Murray's] points. I think we have days when the day sessions go longer, but probably more days statistically in average where they finish – say five, six max – and you can start the night session an hour earlier at least.
"For the crowd, it's entertaining, it's exciting. For us, it's really gruelling. Even if you go through and win, prevail in these matches, you still have to come back.
"You have your sleeping cycle, rhythm disrupted completely, not enough time really to recover for another five-setter. Something needs to be addressed in terms of the schedule after what we've seen this year."
Canada dump Great Britain out of Davis Cup as Shapovalov, Auger Aliassime win
Canada beat Great Britain to ensure their progress to the Davis Cup Final 8 on Sunday, with Denis Shapovalov beating Dan Evans and Felix Auger Aliassime overcoming Jack Draper.
Canada needed just one point from their final group-stage tie, and Shapovalov did the honours at the first time of asking by beating Evans 6-0 7-5.
Shapovalov won 100% of first-serve points as he dominated an opening set that lasted just 27 minutes, and though Evans came back into the encounter in the second set, a break in the final game sealed the deal for Shapovalov.
With Canada's progress secured, Auger Aliassime then added some gloss by overcoming US Open semi-finalist Draper 7-6 (10-8) 7-5 in a fiercely contested affair.
British pair Neal Skupski and Henry Patten beat Gabriel Diallo and Alexis Galarneau 7-6 (7-4) 6-4 in the doubles, but it was of little consequence with their elimination already certain.
Argentina joined Canada in qualifying from Group D with a sweep of Finland, while Italy finished top of Group A in Bologna, thanks to the efforts of Flavio Cobolli.
He beat Tallon Griekspoor 7-6 (7-4) 4-6 6-3 as the Netherlands were forced to settle for second, after Matteo Berrettini had put the defending champions in the driving seat with a 3-6 6-4 6-4 win against Botic van de Zandschulp.
World number one Jannik Sinner was present to support Berrettini, embracing him after he capped his fightback by converting match point.
Australia and Spain had already sealed qualification from Group B prior to Sunday's matches, while the United States and Germany had clinched their progress from Group C.
The Davis Cup Final 8 will take place in Malaga between November 19 and November 24, with Italy hoping to become the first team to defend the title since the Czech Republic in 2013.
'Not my goal at all' - Djokovic not committing to ATP Finals appearance
Novak Djokovic "can't say" if he will compete in the upcoming ATP Finals in November as he becomes more selective about which tournaments he participates in.
The Serbian has struggled with injuries and a lack of form in 2024, and he will finish a calendar year without a grand slam title for the first time since 2017.
His last major triumph came at the US Open last year, but he failed to defend his crown, suffering a shock early exit to Alexei Popyrin in the third round at Flushing Meadows.
Djokovic is just one grand slam trophy away from becoming the outright record holder, currently sitting level with Margaret Court on 24 titles.
He reached the Wimbledon final in July, only to lose out to Carlos Alcaraz, though he did win his first Olympic gold in Paris by beating the Spaniard the following month.
The 37-year-old is currently representing Serbia at the Davis Cup and stressed that he will be prioritising certain tournaments over others.
"Torino is not my goal at all, to be honest, I am not chasing ATP Finals, I am not chasing the rankings etc," he told Serbian reporters after beating Greece's Ioannis Xilas on Saturday.
"As far as I am concerned, I am done with those tournaments for my career. Whether I will play other tournaments this year or in the future, I can't say right now.
"My main priorities are playing for the national team and slams, everything else is less important.
"Weeks like these represent another motivation, they inspire me to keep going, they awake those butterflies in my belly.
"I thought that I would never have to seek motivation anywhere, it all used to come naturally – automatically – but that has not been the case in the last few years.
"In order to prolong my career, I need to enjoy, I need to choose wisely tournaments I am going to play."
Following the Davis Cup, Djokovic will play in an exhibition tournament in Sofia and in the ATP 1000 event in Shanghai at the start of October.
"After that [Shanghai], I am going to see what I am going to do," Djokovic added.
"Usually in my career I used to have my schedule ready six months in advance, but nowadays, that's not the case. Now it's more spontaneous.
"Firstly, I need to physically, emotionally and mentally rest in order to even start thinking what I want to do next, in what way, how much and where."
Djokovic keeps Serbia on track as Ruud seals Norway win
Novak Djokovic marked his return to action with a dominant 6-0 6-1 victory over Greece's Ioannis Xilas to put Serbia in control of the Davis Cup tie.
The 24-time major winner was playing his first match since his US Open third-round defeat by Alexei Popyrin at Flushing Meadows a fortnight ago.
And Djokovic, who helped his nation win the Davis Cup in 2010, looked close to his best as he dropped just a single game, while converting five of the seven break points he forced.
Wrapping up a dominant victory in just 45 minutes, he put Serbia 2-0 to the good in the World Group I tie.
Elsewhere in that group, Casper Ruud helped Norway wrap up a 3-1 win over Portugal.
The three-time major finalist, who put his nation 2-1 to the good alongside Viktor Durasovic in the doubles rubber, was a 7-6 (7-3) 6-2 victor over Jaime Faria in their singles clash.
Later in the day, Argentina booked their place in the final eight after Maximo Gonzalez and Andres Molteni saw off Finland in the doubles decider.
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