Carlos Alcaraz’s hopes of a first Australian Open title ended in a quarter-final defeat by sixth seed Alexander Zverev.
The Wimbledon champion had been in excellent form in Melbourne and threatened a comeback after a slow start but it was Zverev moving through to the last four thanks to a 6-1 6-3 6-7 (2) 6-4 victory clinched at 1.19am.
In his seventh grand slam semi-final, Zverev will take on third seed Daniil Medvedev, who earlier battled past Hubert Hurkacz in five sets.
Alcaraz was heavily fancied to make it an all top-four semi-final line-up but he looked very tight at the start and Zverev took full advantage, barely missing a first serve and striking his groundstrokes with power and precision.
The German had faced a lot of off-court scrutiny regarding his forthcoming domestic abuse trial – he denies the allegations – but his ability as a tennis player was unquestionable.
Alcaraz improved at the start of the second set, finding some of the dynamic, all-court play that has made him such a fan favourite, but he could not take either of two break points in the sixth game.
He then found himself under more pressure in the following game and, after being given a time violation, he netted a forehand to drop serve again.
Alcaraz, who had comfortably beaten Zverev at the same stage of the US Open last summer, looked furious with himself but he could not conjure up any response as errors continued to flow from his racket.
The end seemed nigh when Zverev, who lost his only grand slam final to Dominic Thiem at the US Open in 2020, broke serve again to lead 3-1 in the third set.
But Alcaraz roused himself just in time to break the Zverev serve for the first time at 5-3 and then reeled off a string of seven absurd points to win the tie-break and take it to a fourth set.
The German received treatment for blisters on his foot and Alcaraz seemed to have the momentum but more errors helped Zverev break to lead 5-4 and this time he managed to serve it out, securing his first victory over a top-five opponent at a slam.
“When you’re up 6-1 6-3 5-2, you start thinking,” said Zverev. “It’s not always helpful but I’m happy I got there in the end. I fought back quite well in the fourth set.”
Earlier, Medvedev struggled in the heat of the day against ninth seed Hurkacz, who was looking to make the last four at a grand slam for only the second time.
The Pole twice fought back from a set down but Medvedev came out on top 7-6 (4) 2-6 6-3 5-7 6-4 after three hours and 59 minutes.
The Russian finished it off with a drop shot before blowing kisses towards his box.
Medvedev will now try to reach the final for the third time in four years, and he said: “I’m so destroyed right now. I was feeling very tired physically at the end of the second set already.
“In the fourth set, he played good, I wasn’t beating myself up. I had no more concentration, I thought, ‘I just have to try my best to do whatever I can. If I lose, I lose and I go home. It’s OK’. I’m happy that like this I managed to win and I really liked the match point.”
It was a back-and-forth contest throughout between the two big servers, who both move tremendously well for such tall men.
Medvedev edged the first set on a tie-break and looked to be in full control when, having dropped the second, he took the third and moved a break ahead in the fourth.
But Hurkacz, who had won his last two matches against the Russian and their only previous grand slam meeting at Wimbledon in 2021, did not allow his head to drop and levelled at 4-4.
It was now Medvedev under real pressure on serve, and Hurkacz clinched his opportunity to force a decider when his opponent sent a forehand long.
Medvedev had survived a five-setter in the second round, coming from two sets down to defeat Emil Ruusuvuori at nearly 4am.
And the third seed was not to be denied, a break in the seventh game proving the difference.
WTA Finals: Sabalenka digs deep to reach semi-finals
Aryna Sabalenka became the first player to book her place in the WTA Finals semi-finals after her straight-sets win over Jasmine Paolini on Monday.
The Belarusian had to dig deep in the second set but prevailed in 91 minutes, beating the Italian 6-3 7-5 in Riyadh to secure top spot in the Purple Group after two games.
While Sabalenka cruised through the first set, she was almost forced to a decider, but saved two set points in the 10th game of the second to level the score at 5-5 before going on to claim the victory.
In doing so, she became the first player to reach back-to-back semi-finals at the tournament as world number one since Serena Williams in 2013-14.
Having won three of her previous four tournaments and won 22 of her 23 matches in that time, Sabalenka is now just one win away from securing the year-end world number one spot for the first time, a feat she can achieve if she beats Elena Rybakina on Wednesday in the final round-robin match.
And she can go into it with confidence after improving her record against top-five opponents in 2024, with this her fifth such triumph.
"I'm proud of myself. Not only myself, my team," Sabalenka said.
"We were able to overcome a lot of things. To be able to show such great tennis and become World No. 1. It's teamwork. It's not only me. The behind-the-scenes work nobody sees.
"But they do a lot for me. I really appreciate them for everything they do for me. This is motivation for me to keep winning on this court. Those guys deserve to be called the best team ever."
In Monday's other match, Zheng Qinwen kept her hopes of reaching the final four alive with her win over Rybakina.
The Olympic champion was forced to go the distance though, despite getting the first break in the first and second sets, but eventually came out on top 7-6 (7-4) 3-6 6-1 in just under two-and-a-half hours.
Since the event's inauguration in 1972, Zheng is just the second Chinese player to win a match at the WTA Finals after Li Na.
It was a milestone victory for the 22-year-old as well as she earned her 50th win of 2024, improving her record to 50-17, making her the first Chinese player in the Open Era to hit that mark in a calendar year, though she acknowledged she could have made things easier for herself.
"I was the one to make the first break, and then I let her back in the first," Zheng said.
"Then it happened again in the second. But in the third set, I talked to myself. I broke her first and I stayed focused.
"Finally, in the third set, I start to play my tennis again. So, I'm really happy to win the match."
WTA Finals: Swiatek battles from the brink to make winning start
Iga Swiatek began her bid to regain the world number one ranking by recovering from a set and double break down to beat Barbora Krejcikova in her first match at the WTA Finals.
Swiatek, playing in her first competitive game since her US Open quarter-final exit, emerged a 4-6 7-5 6-2 victor against the Wimbledon champion in Riyadh.
The Pole is the third player in the last 30 years to achieve three or more seasons in a row with over 60 wins, after Martina Hingis (1997-2001) and Caroline Wozniacki (2009-2011).
Only Elina Svitolina (12) has played fewer matches at the WTA Finals than Swiatek (13) to achieve 10 wins at this event since the reintroduction of the Round Robin format in 2003.
But the Pole acknowledged the difficulties she faced against Krejcikova, saying she must improve if she is to retain her WTA Finals crown.
“Even though I played a lot of those [practice] matches,” Swiatek said afterward. “I kind of forgot for a while how it is to feel all those things, a bit different stress and emotions.
"For sure, I needed some time to adapt. The most important thing was that even though it happened, I managed to fight through that. And was patient enough to wait to get better.”
In Sunday's other match, Coco Gauff beat fellow American and doubles partner Jessica Pegula 6-3 6-2 in the second Orange Group match.
Gauff moved to a win-loss record of 51-16 in 2024, including the Olympics and team events, equalling her career-high from 2023 for WTA-level match wins in a calendar year.
She is now only the fifth player to claim 20 or more WTA top 10 wins before turning 21, along with Kim Clijsters (45), Maria Sharapova (39), Ana Ivanovic (26) and Wozniacki (23) since 2000.
"I think maybe I served better than previous times and this is our first time, I think, playing each other on indoor hard, so maybe that had something to do with it," Gauff said.
"I don't know. I think I know I've lost to her a lot, but it doesn't feel like it sometimes.
"Because we do practice a lot, and obviously, when we're playing sometimes I win practice sets, sometimes she does. So it doesn't feel like the head to head is as bad as it was."
Zverev soars past Humbert to claim Paris Masters crown
Alexander Zverev soared to the Paris Masters title following a commanding 6-2 6-2 victory over home favourite Ugo Humbert in the final.
The German took just 75 minutes to seal his seventh career ATP Masters triumph, and second silverware of the season.
Humbert received a raucous reception as he aimed to become the first Frenchman to win this event since Jo-Wilfried Tsonga in 2008.
However, the crowd were silenced when Zverev broke in the third and fifth games on his way to taking the opening set.
The Italian Open champion also dominated the second set, dropping just five points on serve as he wrapped up a comfortable victory.
"I knew I had to play like this to win today," Zverev said. "Ugo is an incredible player, but here in Paris, he plays even better than he usually does, and I knew that.
"Once the crowd gets involved, it's going to be difficult. So, I had to take that away early, and I did, so I'm happy about that."
Zverev was also delighted to triumph in Paris, and demonstrate the strides he has made since suffering a horrifying ankle injury during his 2022 French Open semi-final against Rafael Nadal.
"It was not 100% guaranteed that I would be back at this level," he added. "So, to win this title here in Paris means the world to me, and I'm sure it means everything to those in my box, because they have done so much for me."
Data Debrief: Zverev surpasses Medvedev and matches Sinner
Runner-up to Daniil Medvedev in 2020, Zverev went one better at the Accor Arena four years later, and will be seeded second at the season-ending Nitto ATP Finals.
The second German to win this event after Boris Becker, he surpassed Medvedev (six) with his seventh ATP Masters crown the outright most of any player born since the format's inception in 1990.
Zverev also matched world number one Jannik Sinner for the joint-most match wins in ATP Masters events this season with 28.
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