Nick Kyrgios started his Friday by finishing off his third-round win against Reilly Opelka, and his business was not finished until after 1am local time when he defeated Frances Tiafoe 6-7 (5-7) 7-6 (14-12) 6-2 in the quarter-final.

Due to length rain delays on Thursday, Kyrgios was one of five players forced to abandon their matches and return to finish them first thing on Friday, with Kyrgios and Russia's Andrey Rublev the only two to successfully navigate both.

Tiafoe defeated Botic van de Zandschulp 4-6 6-2 6-3 in the morning, but Kyrgios' ability to keep his service games short was a decisive factor, winning the ace count 35-14 and not conceding a single break all match.

Rublev had to deal with Maxime Cressy in the morning, winning 6-4 7-6 (10-8), setting up a quarter-final later at night against J.J. Wolf after the American defeated Holger Rune 7-5 4-6 6-3.

Rublev made his second match look far easier, cruising through 6-2 6-3 to earn a semi-final against Japan's Yoshihito Nishioka after he needed over three-and-a-half hours to beat Daniel Evans 7-6 (7-5) 4-6 7-5.

In an all-unseeded semi-final, Kyrgios will play Sweden's Mikael Ymer, who fought his way past Sebastian Korda 6-2 5-7 6-3 after the American beat Bulgaria's Grigor Dimitrov 4-6 6-1 6-2 earlier in the day.

Meanwhile, down in Mexico at the Los Cabos Open, Daniil Medvedev earned his spot in the final by defeating Serbia's Miomir Kecmanovic 7-6 (7-0) 6-1.

Medvedev will play England's Cameron Norrie for the title after he prevailed in arguably the match of the tournament against top-10 talent Felix Auger-Aliassime 6-4 3-6 6-3.

Brandon Nakashima needed all three sets to deal with gritty Australian Jordan Thompson, ultimately prevailing 7-6 (7-5) 3-6 6-3 in the first round of the Atlanta Open.

America's Nakashima – who took Nick Kyrgios to five sets at Wimbledon – was the highest seed in action as things kicked off on Monday, and the difference in the match proved to be his quality ground strokes.

Both players won at least 79 per cent of their successful first serves, but while Thompson's effectiveness dipped to 39 per cent on his second serve, Nakashima's stayed up at 65 per cent, only allowing two break point opportunities all match.

Nakashima will meet John Millman in the next round after Millman defeated fellow Australian Alexei Popyrin 7-6 (7-1) 4-6 6-3.

Popyrin clearly had the serving advantage, winning the ace count 12-to-four, but in a match where each player only one had break of serve each, Millman found the important points when it really mattered.

Japan's Taro Daniel came back from a rough start to handle the challenge of America's Sebastian Korda 1-6 6-1 6-3.

Korda was in total control early, winning 12 of his 13 points on serve (92 per cent) in the opening set, but that number dipped sharply to 37 per cent (13-of-35) as Daniel turned the match on its head and found a way to counterpunch the American.

The last singles contest saw Kwon Soon-woo win a hard-fought clash with Marcos Giron 7-6 (7-3) 4-6 7-5. The match was so closely contested that Kwon won 51 per cent of the total points (104-of-204), while Giron won 49 per cent (100-of-204).

Meanwhile, Kyrgios was the biggest name in action, taking the doubles court in his Australian Open-winning partnership with Thanasi Kokkinakis, defeating Nicolas Mahut and Edouard Roger-Vasselin 7-6 (10-8) 6-3.

Ilya Ivashka earned a meeting with Stefanos Tsitsipas at the Mallorca Championships, while Alex de Minaur got his Eastbourne International defence up and running with a straight-sets win on Monday.

A comfortable 6-4 6-1 victory over Emil Ruusuvuori sent Ivashka into the second round, where world number six Tsitsipas awaits after receiving a bye.

Mallorca third seed Denis Shapovalov will face Benjamin Bonzi who benefited as Alejandro Tabilo retired while trailing 6-3 4-2 to the Frenchman.

Roberto Bautista Agut overcame Taro Daniel 6-4 7-6 (7-4) to advance, while Antoine Bellier defeated Federico Delbonis 6-3 7-6 (8-6) and Feliciano Lopez fell to a 7-6 (7-3) 7-6 (7-3) loss to Tallon Griekspoor.

De Minaur took an hour and 23 minutes to get past Cristian Garin 6-3 6-3 for a strong start in his bid to retain the trophy in Eastbourne.

The Australian will either face compatriot James Duckworth or Lorenzo Sonego, who he defeated in the final last year, in round two.

Fifth seed Reilly Opelka fell to a 6-3 6-1 defeat against tournament debutant Maxime Cressy, while Alexander Bublik was three points away from losing to Frances Tiafoe before rallying back to win 5-7 7-6 (7-4) 6-0.

Bublik will face John Millman next after the Australian overcame Sebastian Korda 6-3 7-6 (7-5), while top seed Cameron Norrie awaits Brandon Nakashima and Diego Schwartzman is next in line for Jack Draper.

Korda withdrew from Wimbledon after the defeat to Millman, the 21-year-old American saying on Twitter he was suffering with "terrible shin splints and beaten up feet" and needed a rest.

A spirited fightback from Nick Kyrgios saw the Australian beat second seed Stefanos Tsitsipas in the Halle Open on Wednesday.

Kyrgios suffered a disappointing semi-final defeat to Andy Murray in Stuttgart last week, but looked greatly improved against Tsitsipas as he recovered from a set down to win 5-7 6-2 6-4.

It was the second serve of both men where Kyrgios shone, winning 76 per cent (28 of 37) of points on his second serve, and 58 per cent (23 of 40) on his opponent's.

"Stef is one of the best players in the world at the moment and he's going to have some amazing results and I'm sure many, many grand slams," Kyrgios said following his win.

"I don't know if I can say the same for me, but I'm happy to still be able to produce this level with the tournaments I play. It is a testament to how hard I do work when I'm not playing."

He will face Pablo Carreno Busta in the quarter-finals after the Spanish sixth seed beat Sebastian Korda 6-4 0-6 6-3.

Elsewhere, Hubert Hurkacz will face Felix Auger-Aliassime in the last eight after defeating Ugo Humbert 7-6 (7-5) 6-3, while the Canadian also won in straight sets against Mackenzie McDonald 7-6 (9-7) 6-1.

The one remaining first round match saw number one seed Daniil Medvedev beat David Goffin 6-3 6-2 to set up a second round clash with Ilya Ivashka.

At the Queen's Club Championships, sixth seed Denis Shapovalov was eliminated by Tommy Paul 6-4 2-6 6-4, with the American now scheduled to face Stanislas Wawrinka in the second round.

It means that six of the eight seeds in west London were knocked out in the first round, with Matteo Berrettini and Marin Cilic the only remaining seeds. The latter sealed his place in the quarter-finals on Wednesday with a 7-6 (8-6) 7-5 win over Alexander Bublik.

Cilic will play Finland's Emil Ruusuvuori in the last eight after he beat home favourite Jack Draper 6-2 7-6 (7-2).

The best contest of the day came between Alejandro Davidovich Fokina and Alex de Minaur, with the former coming from behind to win 4-6 6-4 7-5 to set up a quarter-final with Botic van de Zandschulp, who beat Grigor Dimitrov 7-6 (7-5) 6-3.

Carlos Alcaraz put on a mesmerising show for the late-night Court Philippe-Chatrier crowd as the teenage sensation of men's tennis raced into the French Open fourth round.

In a performance described by former British number one Tim Henman as "an absolute clinic", Alcaraz swept to a 6-4 6-4 6-2 win against American Sebastian Korda.

Korda, 21, is widely expected to be a star of the men's tour for years to come, and he beat Alcaraz on clay in Monte Carlo only last month.

This time he found 19-year-old Spaniard Alcaraz too hot to handle on the surface, with the fast-rising world number six demonstrating the form that has brought him a tour-leading four titles in 2022 already.

Tournament organisers were giving the Paris crowds a glimpse into the future by handing Korda and Alcaraz the hot-ticket night session slot. They are both becoming increasingly a factor in the present, too, and Alcaraz is rated a strong contender for the title this fortnight.

Victory made him the youngest man to reach round four at the French Open since Novak Djokovic in 2006, the ATP said. After winning titles in Barcelona and Madrid, Alcaraz is on a 13-match winning run.

It took him two hours and six minutes to get the job done this time, flashing 18 passing shot winners past his opponent, the son of one-time Roland Garros runner-up Petr Korda.

"It's amazing to play in front of such a great crowd, a great atmosphere here in Philippe-Chatrier," Alcaraz said. "I think the night session is fun to play, the whole people enjoyed the match, and I'm grateful to play in front of such a good crowd.

"Of course, in early matches I'm trying to have fun out there. I love playing this kind of tennis court. I love playing in France. I'm enjoying every single second."

Baseliner Alcaraz surprised many by bringing out a rush of serve-volley points, and revealed that was at the behest of coach Juan Carlos Ferrero.

He also revealed how Ferrero, who was briefly a world number one and won the 2003 French Open men's title, remained in great nick on the practice courts at the age of 42.

"I think not too far away, a couple of months ago or a year ago, he beat me in a training set," Alcaraz said. "He's in good shape, and he could beat a lot of players now in a training set."

Henman, analysing the match for Eurosport, said Alcaraz was the complete package. It was a performance that suggested Alcaraz's five-set struggle against Albert Ramos-Vinolas in round two was a blip.

"I thought his performance was absolutely incredible," former world number four Henman said. "Korda perhaps didn't play as well as he would have liked, but he wasn't allowed to play because of the sheer quality of Alcaraz in every area.

"All credit to Alcaraz, it was an absolute clinic out there."

Henman said the youngster turned "defence into attack in the blink of an eye", adding: "I think he came in expecting a really difficult match, and he destroyed Korda."

Alcaraz reached round three on his Roland Garros debut last year, and has now gone a step further, with Russian Karen Khachanov awaiting him next.

Swedish great Mats Wilander, who won the French Open three times in the 1980s, said Alcaraz on the backhand was "very much like Novak Djokovic".

"The forehand side I'm not really sure, I can't explain it," said Wilander, "because the speed of his arm and when he decides to go full... when he goes full it is unbelievable when the ball hits the clay and bounces."

Frances Tiafoe downed fellow American Sebastian Korda in a hard-fought encounter to reach the final of the Estoril Open, while Holger Rune reached a first title match at the BMW Open.

Korda had eliminated top seed Felix Auger-Aliassime in the quarter-finals in Portugal to set up an all-American last-four clash, and looked on course to reach the final after winning the first set against Tiafoe.

However, the fifth seed roared back to seal a 4-6 7-6 (7-2) 6-4 victory and set up a final encounter with Argentina's Sebastian Baez, who beat Albert Ramos-Vinolas to reach his second tour-level final.

Baez also needed three sets in his semi-final clash after losing a competitive second-set tie-break, but he then produced a scintillating performance to win the decider without dropping a game, winning 6-3 6-7 (7-9) 6-0.

Elsewhere, Danish 19-year-old Rune sealed his first ATP tour final appearance by beating home favourite Oscar Otte 6-4 6-4 at the BMW Open in Munich.

Rune, who has enjoyed a dream week in Bavaria after sensationally downing Alexander Zverev in the last-16 and failing to drop a single set in the tournament, revealed his ambitions to become world number one in the future after the victory.

"It's a pretty unreal feeling," he said of his semi-final win. "I didn't expect this at all coming into this tournament, and I just took it match by match. Obviously, I had a tough draw, playing Zverev in the second round, but I knew it was going to be tough, so I was ready from the beginning, and I'm super happy to be in the final.

"It's getting better and better, I'm improving every day, and this is what matters. I have some goals to be number one in the world, and you have to start somewhere."

Rune will face eighth seed Botic van de Zandschulp in the final after the Dutchman rallied to beat Miomir Kecmanovic 2-6 7-6 (7-4) 6-4 in his own final-four encounter. 

Top seed Felix Auger-Aliassime fell to Sebastian Korda in the Estoril Open quarter-finals, while Casper Ruud was sent packing at the BMW Open. 

Auger-Aliassime won just 50 per cent of points behind his first serve as Korda claimed an impressive 6-2 6-2 success over the Canadian in one hour and 29 minutes. 

In the semi-finals Korda will take on fellow American Frances Tiafoe, who edged out Alejandro Davidovich Fokina 7-6 (7-5) 5-7 7-5 in a tight encounter. 

The other last-four clash will see Albert Ramos Vinolas take on Sebastian Baez. 

Ramos Vinolas bested Fernando Verdasco 6-2 6-2 to set up his meeting with Baez after the Argentine rallied from a set down to defeat Richard Gasquet 3-6 6-1 6-4. 

At the BMW Open, second seed Ruud fell to Botic van de Zandschulp in the quarter-finals. 

The Dutchman won their only previous encounter en route to the last eight at last year's US Open and he triumphed 7-5 6-1 in Munich. 

"Maybe the score is easier than it really was," said Van de Zandschulp. "The first set [was] really tight, I think. A great battle in the first one. I had some opportunities to break him in the beginning and didn't take them. Gladly [at] five-all I made the break and held the serve at 6-5. 

"[The] second set was a little bit easier, but I think I played really well today." 

Next up for Van de Zandschulp is Miomir Kecmanovic, who defeated Nikoloz Basilashvili 7-6 (7-5) 6-2. Holger Rune will continue his impressive run against Oscar Otte in the other semi-final after they overcame Emil Ruusuvuori and Alejandro Tabilo respectively. 

The Miami Masters' top seed, Daniil Medvedev, had no problems making his way past Spain's Pedro Martinez 6-3 6-4 to earn his spot in the fourth round.

Serving was the story of the match as the world number two tallied up 14 aces to his unseeded opponent's zero, and only allowed Martinez to see five second serves in the opening set, with Zverev winning all five. Overall, Zverev won 20 of 24 points on serve in the first set.

The second set was more competitive, with Martinez even breaking back after Zverev jumped ahead and looked to coast to victory, but he could not hold off the Russian down the stretch.

Medvedev will play American Jenson Brooksby in his fourth-round matchup after he won a hard-fought 6-3 5-7 6-4 struggle against 15 seed Roberto Bautista Agut.

In a razor-close contest, Brooksby was just slightly better throughout, winning 60 per cent of his service points compared to the Spaniard's 59 per cent, as well as winning 41 per cent of return points compared to Bautista Agut's 40 per cent.

Fresh off his Indian Wells Masters triumph over Rafael Nadal, Taylor Fritz kept his good form going with a 7-6 (7-2) 6-4 win against American compatriot Tommy Paul.

Fritz, who is now up to world number 13, did not have his serve broken all day, winning 81 per cent of his successful first serves (30-37), while also capitalising on the only two break points he saw.

14 seed Carlos Alcaraz only needed two sets to get past 21 seed Marin Cilic 6-4 6-4, creating nine break point opportunities to Cilic's one, which was saved.

In the late session, and in a meeting of rapidly rising prospects, 22-year-old Serbian Miomir Kecmanovic pulled off an upset 7-6 (7-4) 6-3 win over 21-year-old American Sebastian Korda.

Meanwhile, three seed Stefano Tsitsipas was too much for Australian Alex de Minaur, winning 6-4 6-3 after allowing no break point opportunities in the opening set, and saving all three in the second.

Rafael Nadal offered his sympathy to Sebastian Korda after scraping past the 21-year-old, who considers his Indian Wells Masters opponent "my biggest idol".

Korda had trained with Nadal earlier this week before the draw paired the two together – an eagerly awaited encounter for the younger man.

Korda is such a big Nadal fan his cat is named after the Spaniard, but he caused some concern for the 21-time major champion and his other supporters on Saturday.

Having talked up the meeting, it looked as though the occasion might get the better of Korda as he quickly fell 4-0 down in the opener.

Nadal had not dropped a set since victory at the Australian Open – one of three tournaments he has entered this year and three tournaments he has won.

But that perfect 15-0 record suddenly came under threat in the second set, as Korda sought to prolong his dream match-up and stunned his hero 6-1.

Suddenly, Nadal was forced to face down one of his biggest fans in a decider and initially struggled badly, falling two breaks down, with Korda serving for the match at 5-2.

This time the nerves did get to Korda, who lost four games in a row before stopping the rot to reach a tie-break.

There, Korda did briefly hold a mini-break lead, but that was only as part of a sequence of five consecutive mini-breaks that took the match away from him, Nadal prevailing 6-2 1-6 7-6 (7-3).

"I feel very, very lucky today to be through, honestly," Nadal said afterwards.

Korda could at least enjoy his consolation prize: compliments from Nadal, who had won their only prior meeting en route to his 2020 French Open title.

"Sebastian was playing some fantastic tennis and I'm sorry for him," Nadal said. "He had chances, but that's tennis.

"He's very young, he has an amazing future. I wish him all the best."

Up next for Nadal is Dan Evans, whose compatriot Cameron Norrie – the defending Indian Wells champion – also advanced with a straight-sets win over Pedro Martinez.

Favourites Reilly Opelka and Grigor Dimitrov joined top seed Cameron Norrie in the quarter-finals of the Delray Beach Open after victories on Thursday.

With Norrie having already set up a quarter-final against last year's runner-up Sebastian Korda, the Briton was joined in the last eight by the second and third seeds. 

Grigor Dimitrov defeated Mitchell Krueger to mark his first appearance since a disappointing second-round exit at the Australian Open in style.

The Bulgarian won 7-6 (7-4) 6-3, with Serena and Venus Williams watching on from the crowd in far from ideal conditions in Florida.

"It's always very tough [in your opening match], especially playing the last match on," Dimitrov said.

"I've been here for a week already and I was eager to get out there and play. Today was just a match I had to get through. Very tough conditions: rain, wind, cold, hot. It is what it is, and you've got to deal with it."

Opelka, who won the tournament in 2020, went the distance against fellow American Jack Sock, eventually prevailing 6-7 (6-8) 7-6 (7-4) 6-1. 

He will face Adrian Mannarino in the last eight, after the Frenchman's 6-4 2-6 7-5 defeat of Brandon Nakashima. Dimitrov will play Australian John Millman.

At the Rio Open, only two of the four scheduled matches were completed due to rain.

Qualifier Miomir Kecmanovic dispatched sixth seed Lorenzo Sonego 7-5 6-4, while Francisco Cerundolo overcame Roberto Carballes Baena.

Top seed Matteo Berrettini's clash with Brazilian Thiago Monteiro was pushed back to Friday, while Carlos Alcaraz will resume his match against Federico Delbonis in a strong position in the first set.

Carlos Alcaraz produced a dominant performance to seal a straight-sets semi-final victory against Sebastian Baez 4-2 4-1 4-2 at the Next Gen ATP Finals, and will now face Sebastian Korda in the final on Saturday.

The Spaniard, who is both the top seed and the youngest participant in the tournament, followed up his three wins in the round-robin stage in Milan by sweeping past his Argentine opponent in just 62 minutes on Friday.

Baez had become the first South American in the tournament's history to reach the semi-finals, but struggled to live with Alcaraz's power and footwork at the Allianz Cloud.

The 18-year-old will play Korda in the final after the American came through a five-set showdown in his semi-final with compatriot Brandon Nakashima.

Korda had to come from two sets to one down but eventually sealed his victory 4-3 (7-3) 2-4 1-4 4-2 4-2 in an hour and 54 minutes.

The 21-year-old admitted he had to change his approach to overcome the excellent form his opponent had shown in the first three sets.

After his win, Korda said on court: "Brandon was playing some unbelievable tennis, but I stayed with him and had some chances in the fourth and fifth sets, and took them and ran.

"I got more aggressive. I tried coming into the net more and placing my serves more, and that opened up the court for me."

Sebastian Korda extended his perfect record at the 2021 Intesa Sanpaolo Next Gen ATP Finals, while Brandon Nakashima and Sebastian Baez also made the semi-finals.

Korda, who recorded straight-sets victories in his opening two games, cruised past home favourite Lorenzo Musseti 4-2 4-3 (7-4) 4-2 to reach the last four in Milan.

In Group B's other game, Baez became the first South American in the tournament's history to reach the semi-finals after defeating Hugo Gaston 4-3 (7-2) 4-2 4-2 in 65 minutes.

In a winner-takes-all Group A clash, fourth seed Nakashima rallied from a set down to edge past Holger Rune 3-4 (3-7) 4-1 4-1 4-3 (7-1).

Nakashima, who has now won 11 of his past 13 matches, will meet the undefeated Korda in the next stage.

Carlos Alcaraz had already secured his semi-final berth but maintained his unbeaten record in Thursday's other clash as he overcame Juan Manuel Cerundolo 4-0 4-1 2-4 4-3 (7-3).

With the victory over Argentine Cerundolo, Alcaraz becomes the youngest player to earn 30 tour-level wins in a season since Rafael Nadal, aged 18, did so in 2004.

Sebastian Korda produced an inspired turnaround from two sets down to defeat Hugo Gaston 3-4(2) 3-4(6) 4-0 4-3(3) 4-0 in his opening match at the Next Gen ATP Finals.

The American became only the second player in the history of this event to achieve the feat, after Borna Coric against Karen Khachanov in 2017.

Korda is the second seed in Milan this year following an impressive 2021 that saw him capture his first ATP title at the Emilia-Romagna Open, and reach the Miami Masters quarter-finals and Wimbledon fourth round.

The 21-year-old looked destined to begin Group B with a defeat after losing the opening two sets on tie-breaks, while he also saved match point at 3-2 down in the fourth.

Korda subsequently dominated the final set to complete a remarkable victory in just over two hours.

The world number 39 said: "[I] just stayed calm and kept thinking what I could do better. 

"I did play very well tactically in the first two sets, but I figured a couple of things out during the tie-break and I think that helped me for the rest of the match."

Meanwhile, top seed Carlos Alcaraz enjoyed a straight-sets victory over Holger Rune, prevailing 4-3(6) 4-2 4-0.

The Spanish teenager has also enjoyed a fruitful year on the ATP circuit, triumphing in Umag while beating world number three Stefanos Tsitsipas on the way to reaching the US Open quarter-finals.

And he made the perfect start in Group A; enjoying an 88 per cent first-serve success rate in a commanding win.

"I think it was a great match, both of us played really well," the world number 32 said.

"I am trying to go to the net and play aggressively in the important moments and stay calm. I am trying to do this every match."

Elsewhere, Brandon Nakashima – champion in Brest last month – made it 10 wins from 11 matches as he beat Juan Manuel Cerundolo 4-1 3-4(3) 4-1 4-0.

The 20-year-old, who became the youngest American to reach multiple tour-level finals since Andy Roddick earlier this year, was pegged back in the second set, but dominated the final two to seal victory in just over an hour-and-a-half.

However, there was no joy for home favourite Lorenzo Musetti, who was beaten in four sets by Sebastian Baez.

Though roared on by his home crowd, the world number 58 was unable to deliver in his opening match. Baez – a five-time Challenger Tour winner in 2021 – took full advantage to prevail 4-1 4-1 3-4(5) 4-3(5).

Andy Murray's stay in San Diego was short-lived, as the veteran fell to second seed Casper Ruud in straight sets Thursday. 

World number 10 Ruud prevailed 7-5 6-4 over the three-time grand slam winner, rolling to victory after a shaky start. 

Murray broke Ruud in the 22-year-old's second service game of the match, but could not maintain the advantage as Ruud converted five of six break points in the match. 

Ruud will face ninth seed Lorenzo Sonego, who defeated Sebastian Korda 6-4 6-3, saving six of seven break points against his own serve while converting all three of his chances on Korda's. 

Fourth seed Denis Shapovalov defeated Taylor Fritz 7-6 (9-7) 6-2, saving six set points in the process. 

The Canadian moves on to a quarter-final meeting with Cameron Norrie, who downed Daniel Evans 7-6 (7-3) 6-3. 

Grigor Dimitrov dominated August Holmgren 6-1 6-1 in 56 minutes, winning 83 per cent of his service points.

Dimitrov next faces Aslan Karatsev, who rallied to upset fifth seed Hubert Hurkacz 5-7 6-4 6-2. 

This time, Rafael Nadal could not summon the third-set magic he needed.

Coming off an epic three-hour duel Wednesday in his first match since the French Open final, Nadal fell to Lloyd Harris 6-4 1-6 6-4 on Thursday at the Citi Open. 

After a short-lived maiden appearance at the Washington, D.C. tournament, the Spaniard will look ahead to Toronto and Cincinnati as he continues his preparations for the U.S. Open. 

Harris, meanwhile, heads to a quarter-final matchup against veteran Kei Nishikori after recording the biggest win of his career. 

Facing Nadal for the first time, the 24-year-old South African slammed 16 aces Thursday and saved four of six break points. 

The 20-time grand slam winner, who battled a foot injury to outlast Jack Sock in his first match, did not have enough to answer the world number 50 on Thursday.

In addition to the top-seeded Nadal's defeat, second seed Felix Auger-Aliassime also went down Thursday, falling 6-3 6-4 to American wild card Jenson Brooksby. 

With their exits, the tournament is now without its top four seeds. 

That leaves fifth seed Jannik Sinner as the top player remaining after he defeated Sebastian Korda 7-6 (7-3) 7-6 (7-3). 

Nishikori advanced by downing seventh seed Cameron Norrie 3-6 6-3 6-3, while John Millman knocked out eighth seed Reilly Opelka 6-3 7-6 (7-4). 

Among unseeded players, Denis Kudla defeated the red-hot Brandon Nakashima 3-6 7-6 (7-3) 6-4, while Steve Johnston eased past Ricardas Berankis 6-2 6-1 and Mackenzie McDonald beat Illya Ivashka 6-4 6-4. 

In addition to Harris-Nishikori, Kudla will face McDonald in the other quarter-final in the top half of the draw, while Sinner meets Johnson and Millman takes on Brooksby in the bottom half.