Emma Raducanu is playing better tennis now than when she won the US Open last year, according to six-time major champion Kim Clijsters.
British number one Raducanu enjoyed a meteoric rise at Flushing Meadows last year, becoming the first qualifier to win a grand slam as she claimed an unexpected victory in New York.
She reeled off 10 straight matches without dropping a single set, overcoming the likes of Olympic gold medalist Belinda Bencic and Maria Sakkari before seeing off Leylah Fernandez in the final.
Difficult form and injuries have prevented the 19-year-old from truly building on the momentum of that triumph, though, with the world number 11 boasting a modest 13-15 record in her first full year on the tour.
Nevertheless, she claimed notable victories over Serena Williams and Victoria Azarenka in Cincinnati last week ahead of her US Open title defence, which begins against Alize Cornet in the opening round.
And former world number one Clijsters empathises with Raducanu, who she feels needs time to adjust to life in the higher echelons of the sport.
"She's already done a lot more in the lead-up to the US Open than she did last year, she has beaten a lot of good players," Clijsters told Reuters.
"She is maturing as a tennis player. I think her tennis is better now than it was when she won the US Open.
"When you have such a life-changing experience – and I'm not talking about what happens on the court, but everything else that gets added to that, even if she doesn't change, people around you change.
"People look at you differently. People on the tour look at you differently, whether she goes to a tournament in Luxembourg, or in Australia. Everybody knows her.
"Those big changes in life take time to get used to. It's so unrealistic the expectations that are on her because when you play a sport, you go out there and you have an opponent who's trying to win just as hard as you."
While Clijsters believes the teenager would do well to successfully defend her title, the three-time US Open winner is confident she will embrace the challenge.
"Is she going to win the US Open? It would be incredible if she did, but there's a lot of other players out there who have just as much chance as her," said Clijsters, whose last US Open success came in 2010.
"So, it will just be a matter of seeing whether she deals with that emotion of being at the slam and the expectations of it? She might be super excited to be there, and then play really free and without any pressure."
Nadal slumps out of Madrid Open as farewell appearance comes to a halt
Jiri Lehecka claimed a memorable win over one of tennis' greats as he downed Rafael Nadal at the Madrid Open.
Nadal's farewell appearance at the tournament he has won five times came to an end with a 7-5 6-4 defeat on Tuesday.
The 22-time grand slam champion had been hoping to tee up a quarter-final against Daniil Medvedev.
Ultimately, though, world number 31 Lehecka was the man who progressed.
Lehecka ruined the hopes of the Nadal fans packed into the stands in the Spanish capital, and took control when he reeled off 10 straight points to take the opening set.
Nadal won the Madrid Open in 2008, 2010, 2013, 2014 and 2017, and said farewell to the crowd in an on-court interview following his defeat.
Data Debrief: Nadal falls short of milestone
Nadal had been hoping to win his 60th match at the Madrid Open, while he would have reached his 100th ATP Masters 1000 quarter-final had he won. This was his first defeat to a player ranked lower than 20th in the world since he went down to Pablo Cuevas in 2016.
Lehecka, meanwhile, will make his second appearance in the last eight of a Masters 1000 event.
Auger-Aliassime gets the better of Ruud as Medvedev hits Masters 1000 milestone
Casper Ruud's hopes of building on his victory at the Barcelona Open were ended as he lost to Felix Auger-Aliassime at the Madrid Open.
Auger-Aliassime will now face top seed Jannik Sinner in the quarter-finals, after claiming a 6-4 7-5 victory over the fifth seed Ruud on Tuesday.
Ruud, runner-up at last year's French Open and a force to be reckoned with on clay, won in Barcelona earlier in April, but came unstuck against the Canadian.
It was not the only shock exit, as Alexander Zverev, the world number five, succumbed in straight sets to Francisco Cerundolo.
Earlier, Daniil Medvedev claimed his place in the quarters, in which he could face Rafael Nadal, by beating Alexander Bublik 7-6 (7-3) 6-4.
Data Debrief: Medvedev's milestone
Five of the six quarter-finals Medvedev has reached on clay have come at either ATP Masters 1000 or grand slam level.
He has now reached at least the quarter-final stage at all nine Masters events, too.
Alcaraz matches Nadal record as reigning champion scrapes into Madrid Open quarters
Jan-Lennard Struff made life difficult for Carlos Alcaraz, but the reigning Madrid Champion eventually made it through.
Alcaraz had won both of his opening games with the minimum of fuss, but he needed three sets to get beyond Struff, who won a second-set tie-break.
However, Alcaraz eventually prevailed in the decider, clinching a 6-3 6-7 (5-7) 7-6 (7-4) victory.
Alcaraz, who is in the hunt for a third straight title in Madrid, will now face seventh-seed Andrey Rublev for a place in the last four.
Data Debrief: Prodigal son matches the master
There have been plenty of comparisons between Alcaraz and his fellow Spaniard Rafael Nadal.
And with his win on Tuesday, Alcaraz matched Nadal's record for the longest winning run at the Madrid Open, at 14 matches, since the tournament began in 2002.
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