Canadian teenager Leylah Fernandez said "there is no limit to her potential" after beating a third top-five player at the US Open to qualify for her maiden grand slam final in New York.

Fernandez, who celebrated her 19th birthday on Monday, shocked second seed Aryna Sabalenka 7-6 (7-3) 4-6 6-4 in two hours, 20 minutes on Thursday.

British teenager Emma Raducanu, 18, awaits in Saturday's final at Flushing Meadows.

The decider will be the eighth grand slam final in the Open Era between teenagers and first since the 1999 US Open when Serena Williams defeated Martina Hingis. Williams, who remains an active player, has gone on to win 23 major titles, while Hingis won five.

"Impossible is nothing. Like my dad would tell me all the time there's no limit to my potential to what I can do," Fernandez told reporters post-match.

"Nothing's impossible. There's no limit to what I can do. I'm just glad that right now everything's going well."

Fernandez only claimed her maiden WTA Tour title in March, triumphing at the Monterrey Open, while she is only playing her third grand slam, never going further than the third round until this tournament.

The Montreal-born talent labelled her US Open run as "magical" having knocked out top-five trio Sabalenka, defending champion Naomi Osaka and fifth seed Elina Svitolina, along with three-time slam winner Angelique Kerber.

"I think I've been doing some things incredible," Fernandez said. "One word that really stuck to me is 'magical' because not only is my run really good but also the way I'm playing right now.

"I'm just having fun, I'm trying to produce something for the crowd to enjoy. I'm glad that whatever I'm doing on court, the fans are loving it and I'm loving it, too. We'll say it's magical."

Fernandez also revealed when she was in grade six, a teacher had told her to stop playing tennis and focus on school.

"I'm just glad that she told me that because every day I have that phrase in my head saying that I'm going to keep going, I'm going to push through, and I'm going to prove to her everything that I've dreamed of I'm going to achieve them," she said. "I think now I can say that I've done a pretty good job in achieving my dreams."

Aryna Sabalenka said she "destroyed" herself and bemoaned her inability to take opportunities after suffering a shock loss to teenage sensation Leylah Fernandez in the semi-finals of the US Open.

Sabalenka – the second seed – was beaten 7-6 (7-3) 4-6 6-4 to 19-year-old unseeded Canadian Fernandez at Flushing Meadows on Thursday.

The 23-year-old Sabalenka, who has won more matches than any player on the WTA Tour this year, has never reached a major final and her wait continues after also falling in the Wimbledon semis in June.

Sabalenka squandered a set point in the opening set, before losing her final service game to love to bow out on Arthur Ashe Stadium.

"This is life. If you're not using your opportunities, someone else will use it," Belarusian star Sabalenka said at her post-match news conference. "This is what happened today.

"This is what we call pressure. I had a lot of opportunities and I didn't use it. I will try to improve it. I will keep working and fighting, and I believe that one day it will come."

Sabalenka had dominated early, leading 3-0 inside 10 minutes as she barely missed a first serve, before Fernandez rallied to claim the first set.

"I wouldn't say that she did something. I would say that I destroy myself," Sabalenka said. "On the key moment, I was up 4-2 serving, and I think I made double-faults. My first-serve percentage wasn't really good."

Sabalenka identified a key lesson for her was not to "over-think" opportunities, while she was positive about her conqueror Fernandez, who she said was playing like a "top-10 player".

"Now there is no pressure on her at all. Crowd are here for her," Sabalenka said.

"But the question is when you will start to understand what's going on and where you are, how good can you deal with all these expectations and all this level, all this pressure.

"She's like a top-10 player. We'll see how good she will be in the future."

Fernandez will play 18-year-old Emma Raducanu in Saturday's final, marking the first time two teenagers have met in a grand slam decider since Martina Hingis and Serena Williams at Flushing Meadows in 1999.

Canadian teenager Leylah Fernandez shocked US Open second seed Aryna Sabalenka 7-6 (7-3) 4-6 6-4 to reach her first grand slam final on Thursday.

Fernandez continued her giant-slaying run at Flushing Meadows, where the 19-year-old sensation has stunned defending champion Naomi Osaka, 2016 winner Angelique Kerber, fifth seed Elina Svitolina and Sabalenka en route to the decider.

Fellow teenage sensation Emma Raducanu or 17th seed Maria Sakkari await Fernandez in Saturday's final in New York.

The defeat is a bitter blow for Belarusian star Sabalenka, who has never reached a major final, having also lost in the final four at Wimbledon this year.

The semi-final was full of momentum swings, but 52-23 unforced errors and 8-2 double faults ultimately were costly for Sabalenka, who lost the final game on her serve to love to hand Fernandez victory.

Sabalenka had raced to an early 3-0 lead inside 10 minutes on Arthur Ashe Stadium, dominating with her power, missing only one of her first 13 first serves, before Fernandez settled into the contest.

Trailing 4-2, Fernandez – the youngest woman to beat multiple top-five opponents at the same slam since Serena Williams in 1999 – broke back as Sabalenka's first serve let her down, with the former converting the third of three break points.

Fernandez, who survived a break point to level it up at 4-4, eventually closed out the first set in a tie-break.

Sabalenka made a statement by breaking to love in the opening game of the second set, but Fernandez responded with a break of her own to level it at 2-2.

The second seemed destined for another tie-break, however Sabalenka broke to lead 5-4 and she never looked back as the 23-year-old forced a deciding set.

Fernandez seized control, breaking Sabalenka to move 4-2 ahead, though the latter responded immediately, despite the teenager taking her service game to deuce after trailing 0-40.

However, Fernandez held serve at 5-4 before breaking Sabalenka again to love to claim another memorable victory at the US Open.

Data Slam: Oh, Canada!

Fernandez's victory marks the second time in three years that a Canadian teenager has reached the US Open final, with then-19-year-old Bianca Andreescu beating Serena Williams in 2019. Canadian Felix Auger-Aliassime remains alive in the men's semi-finals too.

WINNERS/UNFORCED ERRORS

Fernandez – 26/23
Sabalenka – 45/52

ACES/DOUBLE FAULTS

Fernandez – 6/2
Sabalenka – 10/8

BREAK POINTS WON

Fernandez – 4/7
Sabalenka – 4/11

Emma Raducanu says she is on her "own journey" after sensationally reaching the semi-finals of the US Open.

Raducanu's 6-3 6-4 win over Belinda Bencic – her first career top-40 opponent – saw her become the first qualifier in the Open Era to advance to the last four at Flushing Meadows, the 18-year-old doing so without dropping a set.

She also became the lowest-ranked player in history (150) to make this stage of the tournament, with Kim Clijsters in 2009 and Billie Jean King in 1979 achieving the same feat having been unranked.

Raducanu, who will face either Karolina Pliskova or Maria Sakkari for a place in the final, said: "I have an absolutely amazing team. I have a team back home who could not be here. I am sure they are watching, I hope!

"Thank you so much everyone. I wish you could be here with me but everything we have been working for has shown here.

"To have so many young players here doing so well shows how strong the next generation is. Everyone is on their trajectory, so I am just here doing what I can control, and it is my own journey."

Raducanu grew into the contest after being immediately broken to love and trailing 2-0, proving particularly robust on her opponent's serve.

Bencic landed 61 per cent of her first serves yet managed only a single ace. The Olympic champion was made to work for the 23 points she won on her first serve and then took just nine of a potential 21 on her second.

Raducanu, who managed six aces of her own, added: "Of course, playing Belinda, she is such a great opponent and is in great form, she hits the ball so hard, I had to adjust and adapt and it was a really tough match.

"I am so happy to come through and thank you so much for all your support today.

"It was 0-30 in my last couple of service games so to hold was pretty big, it was one point at a time and trying to focus on what I can control.

"Belinda was going to fight to the end but I am really pleased to come through that."

Emma Raducanu's stunning run at the US Open went on as she claimed the biggest scalp of her career against Belinda Bencic to reach the semi-finals, making history in the process.

Raducanu is the first qualifier in the Open Era to advance to the last four at Flushing Meadows and is sensationally still yet to drop a set, this time overcoming the Olympic champion – her first career top-40 opponent – 6-3 6-4.

Now, in this US Open packed full of surprises, the 18-year-old will certainly fancy her chances against either Karolina Pliskova or Maria Sakkari.

Raducanu had lost the opening two games against Shelby Rogers in the previous round but then won 12 of the remaining 13. She would have been prepared then for another tough start, immediately broken to love and again trailing 2-0.

The teenager soon grew into the contest and had Bencic on the back foot, able to squander an opportunity in the sixth game with a rash, rushed effort at the end of a rally but still break when her opponent double-faulted and then found the net.

Raducanu battled back from 0-30 down to hold and went after the Bencic serve again. Her ability to consistently return unsettled the more experienced player, who survived a scare after another double fault yet was beaten at the net when the next break point arrived, teed up by a staggering rally and forehand winner.

The opener was swiftly settled before Bencic gained a measure of control in the second only to be disrupted by the same issues again. A sublime Raducanu return gave her another opportunity, taken courtesy of the latest double fault.

Three-time major champion Andy Murray had told Amazon Prime that Raducanu would find it "difficult" to enjoy this match, but she cracked a smile having passed up a further opening and a wide grin then greeted the momentous clinching point.

Data Slam: Bencic beaten by Raducanu returns

This match was decided on Bencic's serve, as she became increasingly frustrated by her inability to break down Raducanu's return game. The 11th seed landed 61 per cent of her first serves yet fired in only a single ace. Bencic was made to work for the 23 points she won on her first serve and then took just nine of a potential 21 on her second.

WINNERS/UNFORCED ERRORS

Raducanu – 23/12
Bencic – 19/21

ACES/DOUBLE FAULTS

Raducanu – 6/2
Bencic – 1/5

BREAK POINTS WON

Raducanu – 3/6
Bencic – 1/5

US Open semi-finalist Leylah Fernandez joked Canada's staple sweet treat must be behind the country's emergence of talent after she continued her remarkable run at Flushing Meadows.

Fernandez – who turned 19 on Monday – beat world number five Elina Svitolina  6-3 3-6 7-6 (7-5) to book her spot in the last four in New York.

She is the youngest player to reach the semi-finals at the major since Maria Sharapova back in 2005, and has already beat defending champion Naomi Osaka and former world number one Angelique Kerber.

Fernandez won her first title earlier in the season, triumphing in Monterrey, but this was her first appearance in a grand slam quarter, and she had to come through it in a third-set tie-break – the seventh at this year's edition of the tournament, already more than in the previous three combined.

She is not the only youngster flying the flag for Canada, however, with Felix Auger-Aliassime in action in the men's side of the draw, facing Spain's Carlos Alcaraz – the youngest ever quarter-finalist at the US Open in the Open Era.

Asked in her on-court interview for the reason Canada are producing such talented youngsters, an ecstatic Fernandez quipped: "I would say it's the maple syrup! The Canadian maple syrup is very good!"

Explaining her win, Fernandez said: "I honestly have no idea what I'm feeling right now. I was so nervous, thank you so much to the crowd, the New York crowd, cheering me on, fighting for me, never giving up for me. Thanks to you I was able to push through today.

"Svitolina, she's a great player, she fought for everything, she runs for everything, she deserves to be in the quarter-finals and I'm honoured to have a fight with her.

"I told myself to trust my shots, trust that everything was going to go well and even if I lose, I had to go for it and I'm glad I did."

Fernandez is coached by her father, who was not in attendance at Arthur Ashe Stadium.

"He told me to go out there, have fun, fight for every ball, for every point," the teenager said.

"Today's your first quarter-final, don't make it your last, don't make it your last match over here, fight for your dream.

"My family tell me after every match to just enjoy it, tomorrow is a new day, I'll start from zero and work hard now."

Next up is a semi-final with either Aryna Sabelenka or Barbora Krejcikova, the winner of this year's French Open.

"I'm not going to think about it," Fernandez concluded. "I'm going to enjoy tonight, I'll leave the planning and strategy to my dad back home."

Leylah Fernandez carried on her brilliant form to clinch a place in the semi-finals of the US Open with a 6-3 3-6 7-6 (7-5) victory over Elina Svitolina.

The newly turned 19-year-old has put her name into the history books with a wonderful run at Flushing Meadows, dethroning the defending champion Naomi Osaka and three-time grand slam winner Angelique Kerber on her way to the quarter-finals.

Fernandez's streak will not stop there, and she will now play for a place in the final after overcoming world number five Svitolina in a tense tussle at Arthur Ashe Stadium.

Svitolina was the first to blink as Fernandez broke to nose ahead in the first set, which she took in 40 minutes.

Yet the 2019 US Open semi-finalist struck back in set two, saving three break points to serve out the set.

The Canadian made a brilliant start to the decider, only to concede serve immediately after nudging herself into the lead.

Fernandez rallied herself to break again and Svitolina looked beaten, with the youngster on the verge of the semi-final at 5-2 up.

Once again, however, Svitolina found some resolve, reeling off three consecutive games and forcing a tie-break.

Despite Svitolina seemingly finding a second wind, it was Fernandez who raced into a 4-1 lead, only to once more be pegged back.

Svitolina found another ace to make it 5-5, but a passing shot from Fernandez clipped the net to evade the Ukrainian, who then sent a return long – to the jubilation of the crowd – that sealed a stunning triumph for Fernandez, who collapsed to the court in tears.

Data Slam: New ground for another teenage sensation

Fernandez turned 19 on Monday and celebrated in incredible style a day later. It is her first grand slam semi-final, as she hunts what would just be a third Tour final overall (and a second title after her Monterrey success this year). She will need to cut down on her unforced errors (31), and she only hit one ace compared to Svitolina's eight, but in what was just her second third-set tie-break, Fernandez showed maturity well beyond her years. Next up, it is Aryna Sabalenka or French Open champion Barbora Krejcikova.

WINNERS/UNFORCED ERRORS

Svitolina – 32/25
Fernandez – 42/31

ACES/DOUBLE FAULTS

Svitolina – 8/3
Fernandez – 1/5

BREAK POINTS WON

Svitolina – 4/6
Fernandez – 4/10

Maria Sakkari felt she got her just rewards for being brave as she triumphed in a late-night US Open thriller against Bianca Andreescu.

The Greek sealed a 6-7 (2-7) 7-6 (8-6) 6-3 victory in a gruelling last-16 clash that finally concluded at 02:13 local time in New York – the latest finish to a women's singles match in tournament history.

Sakkari saved eight of the 12 break points she faced as she racked up 46 winners and 40 unforced errors after adopting a bold approach to fight back from a set down and wrap up the victory in three hours and 30 minutes.

She ended 2019 champion Andreescu's 10-match unbeaten streak at the US Open and was delighted to see her tactics pay off, with Karolina Pliskova standing between her and second grand slam semi-final of the year.

Speaking about her fearless showing, Sakkari, who was beaten in the last four at Roland Garros, said: "It's something that I've been working with [coach] Tom [Hill] since end of last year, but I felt like I lost that bravery after the French. I was more hesitant. I was not going for it so much.

"After my loss [in Cincinnati] with Angie [Angelique Kerber] I just practiced for two weeks. I had some very tough practices where I was crying because I could not feel my shots, I could not feel my tennis. But thankfully I had Tom and Yannis, my hitting partner, that supported me a lot.

"I lost my identity. That's how I called it. I lost myself, part of myself. With my psychologist, as well, I found a way to come back and feel again what I felt out there today.

"By telling myself to be more brave, it's not like, Maria, now be brave, and you're brave. It's just a process in practice and everything that has helped me to be more brave.

"I mean, there was a decent crowd staying until 2:30 at night. I said, Maria, you cannot give up. Just stay focused and stay calm and just make balls."

Shelby Rogers was anticipating "nine million death threats" after her fourth-round loss to Emma Raducanu at the US Open on Monday. 

Just two days after coming from two breaks down in the third set to defeat world number one and top seed Ash Barty, Rogers succumbed to a 6-2 6-1 defeat at the hands of Raducanu.

The 18-year-old consequently reached the first grand slam quarter-final of her career and became just the third qualifier to reach the last eight of the women's draw at Flushing Meadows in the Open Era.

Having been overwhelmed with adulation in the wake of her win against Barty, Rogers admitted she was now concerned the scales would tip the other way. 

Sloane Stephens revealed she received more than 2,000 abusive messages on social media after losing to Angelique Kerber in the third round and her fellow American was wary of suffering a similar fate. 

"I kind of wish social media didn't exist, but here we are. It's a big part of marketing now. We have contracts, we have to post certain things," said Rogers. 

"You could probably go through my profile right now, I'm probably a fat pig and words that I can't say right now. But, I mean, it is what it is. You try not to take it to heart, and it's the unfortunate side of any sport and what we do." 

She continued: "I think someone asked by the other day some advice I would give, and I said try not to get too high or too low with every match. 

"It's tough when you know you have a win like that [against Barty] and everybody is treating it like the final. Everybody coming up to me on-site. 

"I'm really actually happy I had doubles [on Sunday] because it kind of refocused me a little bit, but everyone's coming up to you, 'Oh, great win.' I'm like, 'Yeah, but it's just the third round. We're not even halfway right now.' 

"It's just really tough sometimes to keep that in perspective, but you do the best you can and try to ignore the media and everybody blowing it up and making you the story of the tournament. 

"Obviously, we appreciate the spotlight in those moments, but then you have today and I'm going to have nine million death threats and whatnot. It's very much polarising – one extreme to the other very quickly. 

"At this point in my career, I'd say I'm used to it. It's just now for me, finding a way to have those big wins but then be able to back it up a little bit. It's not easy to say the least." 

Rogers won just 38 per cent of points behind her first serve and committed a total of 29 unforced errors, leaving the 28-year-old hugely dissatisfied with her display. 

"That was pretty embarrassing," she said. "It was a tough day at the office. Unfortunately, I had to fail in front of thousands and thousands of people. I have to live with that one. 

"It's disappointing that I couldn't must up a little more today. But I told you guys the other night it took everything I had to beat Barty. I guess that was a little apparent today. The tank was empty."

Emma Raducanu broke new ground on Monday as the qualifier reached the quarter-finals of the US Open in supreme style.

The 18-year-old produced one of the performances of the tournament when she defeated Sara Sorribes Tormo 6-0 6-1 on Saturday.

The Briton lost the first two games of her clash with Shelby Rogers, who impressively beat world number one Ash Barty in the previous round, but she then stormed to a 6-2 6-1 victory in her first outing on the court of Arthur Ashe Stadium.

Raducanu, who made headlines in the United Kingdom when she reached round four on her Wimbledon debut in July, will now face Olympic gold medallist Belinda Bencic in the first major quarter-final of her career.

Raducanu responded after a nervy start by reeling off six games in a row to take the first set in dominant fashion.

Rogers, who won just 12 points behind her first serve throughout, seemed to wilt against the onslaught as her groundstrokes became wild, her unforced error count totalling 29 by the end.

Raducanu appeared to feel the nerves towards the end of the second set but eventually closed out a famous win on her fourth match point, becoming just the third qualifier in the Open Era to reach this stage of the US Open.

"It feels absolutely amazing to play in front of all of you," she said in her on-court interview. "I'm so happy to have come through and overcome some of the nerves from the beginning.

"Belinda's a great player who's in great form, so I know I'm going to have to bring it.

"I'm just not really thinking about tennis right now. I'll leave that for tomorrow!"

Raducanu will face Bencic on Wednesday, the Swiss having beaten seventh seed Iga Swiatek in straight sets.

Barbora Krejcikova explained she was hit by breathing difficulties and a spell of severe dizziness as she overcame Garbine Muguruza at the US Open.

French Open champion Krejcikova – who is making her main-draw debut at Flushing Meadows – had to hold off a fightback from former world number one Muguruza on Sunday to progress into her first US Open quarter-final with a 6-3 7-6 (7-4) victory.

However, Muguruza was left angry after Krejcikova started to take more time in between points.

After saving three set points at 4-5 down in the decider, Krejcikova went off court for medical treatment, before returning to see out the match on a tie-break.

Muguruza appeared to confront Krejcikova during the post-match handshake, and the Spaniard told the media: "I'll let you guys judge what you think about this.

"I think, between players, you know a little bit how to behave in certain moments and I wasn't very happy at the end of the match."

Krejcikova, however, explained how she had suffered during the match.

"I think I started the match really well and was playing good tennis," Krejcikova said, according to the WTA. 

"The key was to start the match well. There were a lot of breaks, which was difficult, but I was happy that I won the first set 6-3. Out of nowhere I got the lead 4-0 and then things started to get complicated.

"Garbine started to raise her level and I was expecting that. At the end I was really struggling and I feel really bad right now.

"I don't really know what happened, but I couldn't breathe. I started to feel dizzy and the whole world was shaking. It never happened to me before."

Krejcikova also needed medical attention after the match and did not hold a post-match news conference.

The Czech has now won 29 of her last 32 matches and will face Aryna Sabalenka, the highest seed remaining at Flushing Meadows, in the quarter-finals. 

Canadian sensation Leylah Fernandez said she is pinching herself after continuing her fairytale run with a shock last-16 win over Angelique Kerber at the US Open.

After stunning defending champion Naomi Osaka in a third-round boilover at Flushing Meadows, giant-slaying teenager Fernandez conquered three-time grand slam winner Kerber 4-6 7-6 (7-5) 6-2 en route to the quarter-finals.

Kerber – the 2018 US Open champion – won the opening set in New York, however 18-year-old Fernandez staged a remarkable comeback on the eve of her 19th birthday to reach her first slam quarter-final.

"I did have to pinch myself a little bit to see that it actually happened, but like I said, I knew that my tennis, my level of tennis is there," Fernandez said post-match. "It's just a moment of time, opportunity, and I'm glad that I was able to get this opportunity now and that I was able to showcase what I can do in front of these players.

"Even if I would have lost, I would have been proud of myself with the way that I played, the way that I fought. I was lucky enough to get the win today and just getting this experience.

"It's my first fourth-round quarterfinals in a grand slam. I'm just going to enjoy it at 100 per cent, and tomorrow is going to be a new day."

Fernandez, who hit 45 winners to 34 unforced errors – added: "The match was incredible. I was playing well in the first set.

"Unfortunately I did a few mistakes. Her, as a great player, great champion, she noticed and she took advantage of it. I was able to refocus and fight back for the second.

"In the third, I was just enjoying every moment of it. Honestly, the crowd has been amazing, so thanks to them I was able to win."

"I'm just super happy," she continued. "I'm going to enjoy tonight as much as I can, and then once I'm off to bed, I'll try to forget about it so that I can get ready for tomorrow."

Sloane Stephens has detailed the online abuse she received after exiting the US Open to Angelique Kerber.

Stephens, who won at Flushing Meadows in 2017, was beaten 5-7 6-2 6-3 in the third round on Friday by three-time major champion Kerber.

The American had defeated outstanding teenager Coco Gauff in her previous match but could not maintain a title challenge in New York.

It was a defeat that prompted a shocking response on social media, Stephens revealed on Saturday.

"I am human," she wrote on her Instagram story. "After last night's match I got [more than 2,000] messages of abuse/anger from people upset by yesterday's result.

"It's so hard to read messages like these, but I'll post a few so you guys can see what it's like after a loss..."

Stephens then shared screenshots of a series of threatening, racist and misogynistic messages aimed in her direction.

She added: "This type of hate is so exhausting and never ending. This isn't talked about enough, but it really freaking sucks...

"I'm happy to have people in my corner who support me. I'm choosing positive vibes over negative ones.

"I choose to show you guys happiness on here, but it's not always smiles and roses."

Emma Raducanu came within one point of a sensational double bagel against Sara Sorribes Tormo and could face Ash Barty next at the US Open.

The 18-year-old Briton came through qualifying to make her Flushing Meadows bow this week.

And now Raducanu is remarkably into week two without dropping a set.

She saved her best performance yet for round three, winning 6-0 6-1 after passing up a match point on Sorribes Tormo's serve that would have sealed a flawless result.

Her place in the fourth round was a fine consolation for Raducanu, who reached the same stage at Wimbledon in July, then appearing in a grand slam main draw for the first time.

A match against Ajla Tomljanovic proved a step too far at the All England Club, but Raducanu may now get an opportunity to advance against another Australian.

If Barty beats Shelby Rogers later on Saturday, the world number one will face Raducanu next week – presumably far away from the Court 17 the teenager was consigned to on this occasion.

Given Sorribes Tormo beat Barty in straight sets in the first round of this year's Olympic Games, Raducanu should have nothing to fear.

"It's been two weeks in New York now," she told Prime Video. "And into the third week – I never thought I'd be here, but I'm just so, so excited."

Raducanu said of her latest triumph: "I was playing very well. I know Sara is an extremely tough opponent – she doesn't make a mistake, so you have to be on your game every single point.

"I had to work so hard, and there were some really, really long deuce games that could have gone either way, so I'm just really happy that I managed to maintain and stay on it and win in the end."

It was a far more comprehensive success than Raducanu was willing to admit, though, with the world number 150 having 11 break point opportunities to her opponent's zero.

Raducanu's blistering forehand averaged 92 miles per hour on serve, while she played 23 winners.

"Honestly, for this one, the plan was I had to hit through her, I had to hit the corners," she added. "If you trade against her, you're probably going to come out second best.

"I just took the game to her and hit more winners than errors today."

Leylah Fernandez revealed how the energy of the Flushing Meadows crowd helped power her to a stunning comeback win over Naomi Osaka at the US Open. 

Reigning champion Osaka appeared on course to progress when up a set and serving for the match at Arthur Ashe Stadium, only to let the opportunity slip away. 

The world number three lost her serve and then also her composure in the tie-break that followed, throwing her racquet on more than one occasion as Fernandez prevailed to force a decider. 

The Canadian teenager broke immediately at the start of the third set and retained that advantage through to the finish, allowing her to complete a famous victory in New York. 

"I wasn't really focused on Naomi, I was focused on my game and what I needed to do," Fernandez told the media. 

"Having the crowd there, supporting me, backing me up after every point, it was amazing. It gave me the energy to keep fighting, keep working, keep running for those balls that she hit.

"I was just glad that I was able to put on a show for everyone who came to watch."

The 18-year-old also explained how she has always had a competitive streak, adding: "From a very young age, I knew I was able to beat anyone who was in front of me.

"Even playing different sports, I was always that competitive and saying I was going to win against them, win against my dad in soccer, even though that was impossible, I've always had that belief, tried to use that in every match when I go on. I guess today that belief came true."

Osaka announced in her post-match media duties that she plans to "take a break from playing for a while", as well as apologising for her outbursts on court.

She received a warning for hitting a ball into the stands but appeared set to launch a fightback of her own in the deciding set, only for the impressive Fernandez to hold firm.

"I've watched her win the US Open, I've watched her win the Australian Open the very next year – just seeing her, learning from her, has helped shape my game," Fernandez said of Osaka.

"She is a great example for anybody on Tour, and all the little girls in the world.  

"I'm just glad I had the opportunity to play against her, show everyone I am also able to compete against the best players out there."