Novak Djokovic sealed his place in the final four at the Tel Aviv Open after beating one of his "best friends" Vasek Pospisil on Friday.

The Serbian was made to work hard by his Canadian opponent, particularly in the first set, but eventually won 7-6 (7-5) 6-3.

Djokovic was particularly impressive on his second serve, winning 70 per cent of them, only four per cent less than his first serve success rate, and he hit just eight unforced errors compared to Pospisil's 21.

"It was a great, positive win," Djokovic said afterwards. "Vasek is one of my best friends on the Tour. We have known each other for many years. It is never easy playing someone you respect so much and like so much, but we are both professionals and wanted to win the match and you can see that.

"I think the level of tennis was really high. Especially towards the end of the first set and the second set. Credit to him for fighting. It's great to see him back."

The number one seed will play Roman Safiullin in the semi-finals after the Russian beat Arthur Rinderknech 6-4 6-1.

Constant Lestienne came through a tight contest with Maxime Cressy, winning 6-7 (4-7) 6-3 7-6 (7-3), and will face number two seed Marin Cilic in the other semi after the Croatian was handed a bye following Liam Broady's withdrawal prior to their match.

At the Sofia Open, Jannik Sinner remains on course for a third successive title at the tournament, setting up a final-four encounter with Holger Rune after easing past Aleksandar Vukic 6-2 6-3, with Rune eventually dispatching Ilya Ivashka 6-2 5-7 6-4.

The other semi-final in Bulgaria will see Lorenzo Musetti take on Marc-Andrea Huesler after both won their respective quarter-finals against Jan-Lennard Struff and Kamil Majchrzak.

Novak Djokovic cruised past Pablo Andujar to reach the quarter-finals of the Tel Aviv Open on Thursday, showing no signs of rustiness on his first Tour-level outing since July.

Djokovic had not featured in an ATP-level match since his final victory over Nick Kyrgios at Wimbledon, having been forced to miss the US Open due to his COVID-19 vaccination status.

But the Serbian needed little time to find his feet in Israel, winning the first seven games of the match and breaking the Spaniard's serve four times en route to a 6-0 6-3 victory.

Speaking on court afterwards, Djokovic said: "Fantastic atmosphere here tonight, thank you very much. I like the court, it's very intimate and it's very loud. 

"The crowd here is very passionate about the sport, about tennis and I'm really, really happy to be here and to perform here in front of you, so thank you for your support."

The 21-time grand slam winner will face Canada's Vasek Pospisil in the last eight after he beat home hopeful Edan Leshem 6-3 6-2.

Two of Djokovic's fellow seeds fared less well, however, with Diego Schwartzman and Botic van de Zandschulp both being ousted after three-set contests.

Third seed Schwartzman failed to capitalise on a third-set match point in his 6-3 2-6 7-6 (9-7) loss to Arthur Rinderknech, while Britain's Liam Broady teed up a clash with Marin Cilic by beating Van de Zandschulp 6-4 4-6 6-3.

The Sofia Open also saw a couple of seeds fall to surprise defeats on Thursday, although Jannik Sinner avoided any drama in his 6-3 6-4 win over Nuno Borges.

Sinner now has a perfect 10-0 record at the event, which he won in both 2020 and 2021, and will face Australia's Aleksandar Vukic for a place in the final four.

Holger Rune also progressed to the last eight, though he was forced to rally after losing the opener against Lorenzo Sonego, but Pablo Carreno Busta and Oscar Otte were both dumped out.

Second seed Carreno Busta fell to a 6-3 3-6 6-2 reverse against Switzerland's Marc-Andrea Huesler, who will face Poland's Kamil Majchrzak in the quarter-finals after he came back to beat Otte 4-6 6-2 6-4.

Casper Ruud saw off a fightback from Nicolas Jarry to book his spot in the quarter-finals of the Korea Open, as well as this year's ATP Finals.

The top seed was given a second set scare by the Chilean but wrestled back control to emerge as the victor in a 6-2 3-6 6-3 encounter.

The two-time grand slam finalist, having been runner-up at Wimbledon and the US Open this year, will face Yoshihito Nishioka after he saw off Japanese compatriot Taro Daniel in a 6-2 6-4 win.

His victory also ensured his place at the ATP Tour's end-of-year finale in Turin, alongside Spanish duo Rafael Nadal and Carlos Alcaraz.

Cameron Norrie remains on course to set up a potential final in Korea with Ruud after brushing aside Kaichi Uchida with a comfortable 6-2 6-2 victory.

The Briton will face eighth seed Jenson Brooksby after he turned over home favourite Kwon Soon-woo in a 6-3 6-4 result in Seoul.

Brooksby's fellow Americans Mackenzie McDonald and Aleksandar Kovacevic also came through their last-16 encounters to set up a quarter-final clash against each other.

Marin Cilic had to come from behind to defeat Dominic Thiem as he sealed a spot in the quarter-finals of the Tel Aviv Open.

Cilic, who was also celebrating his 34th birthday, was given a thorough test initially by the wild card, but Thiem ultimately faded away.

After losing the first set, second seed Cilic eventually won 6-7 (6-8) 6-2 6-4 as he succeeded in putting the Austrian's serve under intense pressure, setting up a quarter-final with either fifth seed Botic van de Zandschulp or Liam Broady.

Reacting to the victory, Cilic said: "I think it was a fantastic match. I think it was an amazing, amazing level.

"We don't get so many chances to play [a] second-round [match] in front of this big [of a] crowd, so thank you so much. It was a fantastic birthday."

Maxime Cressy, seeded fourth, was far more comfortable as he defeated fellow American Sebastian Korda 6-4 6-4 thanks to a break of serve in either set.

The only other seed in action was seventh favourite Adrian Mannarino. The Frenchman came unstuck against his countryman Constant Lestienne, who won 7-6 (7-2) 6-4.

At the Sofia Open, two high seeds were surprisingly dumped out on Wednesday.

Home favourite Grigor Dimitrov, seeded third, was beaten in straight sets by Ilya Ivashka, who showed commendable focus to see out a 6-3 7-6 (7-3) win despite the crowd's support of his opponent.

Number six seed Nikoloz Basilashvili was the other big name to suffer a shock defeat, with 38-year-old Fernando Verdasco beating him 7-6 (7-1) 7-5 as the seven-time ATP Tour title winner rolled back the years.

Lorenzo Musetti bucked the trend, however. Seeded fourth, the Italian was made to sweat by Bulgaria's Alexander Lazarov as the first two sets went to tie-breaks, but the Italian had too much in the end as he won 6-7 (5-7) 7-6 (10-8) 6-2.

Earlier in the day, Musetti's compatriot Lorenzo Sonego comfortably dealt with Bernabe Zapata Miralles 6-3 6-4.

Novak Djokovic wants to replicate Roger Federer's emotional farewell by having all his tennis rivals present when he brings down the curtain on his own career.

Federer played his final top-level tennis match in last week's Laver Cup when partnering long-time rival and friend Rafael Nadal in doubles competition

Djokovic and Andy Murray, two of Federer's other great adversaries, were also part of the 41-year-old's side at London's O2 Arena.

Despite boasting an all-star cast of talent, Team Europe fell to a first ever defeat against Team World, yet it was Federer's teary send-off that made the headlines.

And Djokovic, who has no current plans to retire, would like to share a similar moment at the end of his playing days.

"It was just a very touching, very emotional moment," Djokovic told reporters ahead of his second-round match against Pablo Andujar at the Tel Aviv Open.

"Seeing his kids and his family, it got me emotional as well. I also must say I was thinking about how it would look for me when I say goodbye to tennis.

"There is definitely one thing that I will wish to have, other than, of course, my family and the close people in my life, I would love to have my biggest rivals and competitors there. 

"Because it added something more special; it added more importance to that moment."

Federer retires as a 20-time grand slam winner – one fewer major title than Djokovic, who is himself one behind men's record holder Nadal.

With Federer now out of the picture, Djokovic says Nadal remains his biggest rival on the court.

"We played the most matches against each other of any other rivalry in the history of tennis," he said. "The rivalry is very special and keeps going. 

"Hopefully, we'll get a chance to play against each other more times. Because it's exciting for us and also for tennis fans and sport fans around the world."

Denis Shapovalov claimed a spot in the quarter-finals of the Korea Open by seeing off the challenge of Spain's Jaume Munar on Wednesday.

The 2021 Wimbledon semi-finalist needed 109 minutes to claim a 7-5 6-4 win over Munar, assuming control by breaking in the seventh game of the opener before doing likewise early in the second set.

Canadian Shapovalov – who is seeded fourth for the event – had not featured since a dramatic loss to Andrey Rublev at the US Open earlier this month, but produced a consistent display in Seoul, not committing a single double fault during the match.

His reward for the victory is a last-eight tie with Radu Albot, who held his nerve in two tie-breaks to record a 7-6 (7-3) 7-6 (7-3) win over Steve Johnson.

In Wednesday's other match, Japan's Taro Daniel beat Ecuador's Emilio Gomez in straight sets in the duo's round-of-32 tie. 

Top seed Casper Ruud begins his campaign against Nicolas Jarry on Thursday.

Holger Rune saw off a spirited challenge from Tim van Rijthoven to progress to the second round of the Sofia Open on Tuesday, while a pair of seeds suffered surprise exits at the Tel Aviv Open.

Rune – the fifth seed for the tournament in Bulgaria – required two tie-breaks to clinch victory in his first meeting with Van Rijthoven on the ATP Tour, eventually claiming a 7-6 (7-2) 7-6 (8-6) win.

After the match, Rune expressed his relief at avoiding a third set, saying: "I didn't want to go to three sets. If it [had happened], I was going to fight for sure and try to take it in three, but I'm very happy to finish in two."

Meanwhile, eighth seed Oscar Otte beat Dragos Nicolae Madaras 6-3 6-2, and Portugal's Nuno Borges overcame Mirza Basic in three sets to tee up a meeting with defending champion and top seed Jannik Sinner.

In Tel Aviv, seeds Aslan Karatsev and Tallon Griekspoor fell at the first hurdle with three-set reverses to Tomas Martin Etcheverry and Vasek Pospisil, respectively. 

Etcheverry rallied after Karatsev took a second-set tie-break in comprehensive fashion to post a 6-2 6-7 (0-7) 6-4 win, while lucky loser Pospisil stunned Griekspoor for a 4-6 7-6 (7-3) 7-5 triumph.

Fifth seed Botic van de Zandschulp fared better, however, dispatching Joao Sousa 6-2 6-3 after producing a top-class display of serving.

The Dutchman will meet Britain's Liam Broady in the next round after he recorded a straight-sets win over Hamad Medjedovic.

Yoshihito Nishioka knocked fifth seed Dan Evans out of the Korea Open with a straight-sets victory on Tuesday.

Nishioka moved into the second round in Seoul with a 6-2 7-6 (7-3) defeat of the Briton.

The world number 56 from Japan will face Taro Daniel or Emilio Gomez in round two after winning 70 per cent of points on his first serve and breaking Evans four times.

Jenson Brooksby was forced to go the distance, but delivered a final-set bagel as the eighth seed saw off Wu Tung-lin 7-6 (7-5) 3-6 6-0.

Qualifier Nicolas Jarry will take on top seed Casper Ruud after defeating Ryan Peniston 6-3 7-6 (10-8), while American duo Mackenzie McDonald and Steve Johnson also advanced.

Tseng Chun-hsin progressed with Chris O'Connell retired with an injury after losing the first set before Kwon Soon-woo beat Yunseong Chung in an all-South Korean contest.

Aleksandar Kovacevic marked his ATP Tour main-draw debut by knocking seventh seed Miomir Kecmanovic out of the Korea Open on Monday.

American Kovacevic was only playing in the first round as a lucky loser in Seoul after he was beaten in the final round of qualifying, but he grasped his chance by winning 6-4 6-4.

The 24-year-old served 14 aces and broke the world number 32 three times to set up a second-round meeting with Christopher O'Connell or Tseng Chun-hsin.

Radu Albot got the better of Hiroki Moriya in his first appearance in Seoul, while Jaume Munar progressed when Yosuke Watanuki retired early in their match due to an ankle injury.

Kaichi Uchida came out on top in the final match of the day, consigning Hong Seong-chan to a 6-4 6-2 defeat.

In an all-American final at the San Diego Open, Brandon Nakashima defeated Marcos Giron 6-4 6-4 to capture the first ATP Tour title of his career.

Nakashima, 21, was playing in the third final since arriving on the ATP Tour, having lost the deciders at both the Atlanta Open and the Los Cabos Open as a teenager back in 2021.

Against Giron, the first set lasted just 35 minutes as San Diego native Nakashima converted the only break point opportunity of the frame, while winning 80 per cent (20-of-25) of his service points.

In a spectacularly efficient display, Nakashima hit 15 winners and only one unforced error, while adding six aces with no double faults.

He cooled off slightly in the second set, but it was still more than good enough, posting another 15 winners with five unforced errors and grabbing a break of serve in the opening game.

Giron would finally nab his first break of the contest in a game where he converted on his fourth opportunity, but Nakashima immediately answered to jump ahead 4-2 and serve it out cleanly.

With the win, Nakashima will rise into the top 50 of the world rankings for the first time when it is next updated.

Local hope Brandon Nakashima will take on Marcos Giron in the San Diego Open final after the latter shocked top seed Daniel Evans in Saturday's semi-finals.

World number 58 Giron upset Evans 6-3 7-5 in one hour and 46 minutes, qualifying for his maiden ATP Tour final.

San Diego native Nakashima progressed into the decider after getting past Australian Christopher O'Connell 6-4 7-6 (7-3).

Nakashima's triumph means he is into his first tour-level final of the season and it has come in familiar territory.

The fifth seed needed one hour and 50 minutes to beat O'Connell, who had the edge in the key statistics, including 8-7 aces, 34-31 winners and 13-16 unforced errors.

But Nakashima came up big when it mattered, managing the only break of the match in the first set, before triumphing in a tiebreak.

Giron produced the surprise result against world number 25 Evans, who was chasing his first-ever ATP Tour title.

The American sent down 11 aces, while he also hit 40-25 winners. Evans was unable to convert any of the three break points he generated throughout the match.

Roger Federer has thanked fans and fellow players for providing him with a "magical" send-off at the end of his glittering professional career on Friday.

The 20-time grand slam champion brought the curtain down on his incredible career in a doubles match alongside Rafael Nadal at the Laver Cup in London, facing off against American duo Jack Sock and Frances Tiafoe.

Although Federer and Nadal fell to a 4-6 7-6 (7-2) 11-9 loss, the Swiss maestro was given a hero's reception at the O2 Arena, and old rival Nadal joined him in shedding a tear after the match.

Immediately afterwards, Federer joked he was simply glad to have avoided injury and described his career as a "perfect journey".

Federer then expressed his appreciation for everyone involved on Saturday, writing on Twitter: "It was a magical evening yesterday. 

"Thank you again to all the players and fans who were here to share this moment with me. It means the world."

Speaking at a news conference after his send-off, Federer described it as "all happiness".

"The match, yes, in itself, sure, is special," he said. "But it's really everything that happened after, because I wasn't aware who was going to come to sing, what was going to happen, where I should go, what was expected of me, or how long it was going to go.

"Then I guess looking around and seeing how everybody got emotional, obviously it's even better, or even worse, I'm not sure what to say.

"The last two days have been tough to say the least. Thankfully, in moments, I totally forgot about it, slept great, everything was wonderful, I could enjoy it. 

"Because of that, I think I will be able to have a better recollection of how it went, because if it's all just stress throughout and I want it to be only perfect, I know I will remember half of it.

"I didn't have fireworks in my head where I see my career flashing by, all the things I'm going to miss. It was hard for me making phone calls, letting people know that this decision is happening. There I felt pain, but now, tonight was all happiness."

Meanwhile, Federer has refused to rule out taking part in exhibition matches in the future, stating his desire to allow more of his fans to see him in action one last time.

"The message from me was just making sure I relay my passion for the sport to the fans, and I let them know that hopefully we'll see each other again on a different type of tennis court," he added.

"I have no plans whatsoever, where, how, when. All I know [is] I would love to go and play places I have never played before or go say thank you for years to come to all the people that have been so supportive of me.

"Because the hard part about the Laver Cup was that tickets were already sold out. The people who maybe would have also loved to be here couldn't make it. 

"Maybe there is another way down the stretch we can party all together."

Rafael Nadal has withdrawn from the Laver Cup after being paired with Roger Federer for the final match of the Swiss star's career on Friday.

Federer had announced he would be retiring following the tournament and was then only fit to feature in one doubles match.

But that gave the Swiss great the opportunity to team up with Nadal, with the duo falling to a narrow and entertaining 4-6 7-6 (7-2) 11-9 loss to Jack Sock and Frances Tiafoe at the O2 Arena.

That defeat marked the end of Federer's involvement in the Laver Cup, and Nadal's participation is over for this year, too.

Nadal has been dealing with an abdominal injury in the second half of this season, with the issue notably seeing him miss a Wimbledon semi-final against Nick Kyrgios.

However, the Laver Cup, announcing the Spaniard's absence from the weekend's play on Saturday, made no reference to any ailment, saying he had pulled out "for personal reasons".

Cameron Norrie took Nadal's place in the tournament and was set to face Taylor Fritz.

A tearful Rafael Nadal said "an important part of my life is leaving" after partnering Roger Federer for the final match of the Swiss great's career at the Laver Cup in London.

The last match of Federer's career saw him partner with his great rival Nadal to play doubles for Team Europe on Friday, taking on American duo Jack Sock and Frances Tiafoe at the O2 Arena.

Despite taking the first set, Nadal and Federer ultimately fell to an entertaining 4-6 7-6 (7-2) 11-9 loss before watching a series of tributes to the Swiss maestro, who also had an on-court interview and was embraced by his team-mates, opponents, family and friends.

Nadal, one of just two male players with more grand slam wins than Federer's 20 (22, also Novak Djokovic with 21), was seen to be in tears as he sat next to the retiring star during the post-match tributes.

During the match, he also showed signs of nerves due to the scale of the occasion and later declared he would hugely miss his long-time rival. 

"It has been a difficult day to handle every single thing, and at the end everything became super emotional," Nadal said. 

"For me, it has been a huge honour to be a part of this amazing moment of the history of our sport. 

"When Roger leaves the tour, an important part of my life is leaving too because of all the moments that he has been next to me or in front of me in important moments of my life.

"So, I have been emotional to see the family, see all the people. Difficult to describe, but amazing moment."

Top seed Daniel Evans is through to the last four at the San Diego Open after defeating Constant Lestienne 6-1 6-3 in Friday's quarter-final

It was perhaps a closer contest than the final score indicates, with Evans creating 13 break point opportunities while Lestienne created 11, but the Englishman was able to save 10 of the 11 he faced while converting five himself.

Ultimately the difference between the two players was Evans' ability to avoid wasteful errors, posting 23 winners with 12 unforced errors while Lestienne had 15 winners with 21 unforced errors.

Evans will play third seed Marcos Giron for a spot in the final after the American beat Australia's James Duckworth 7-6 (7-5) 6-3.

It was a match that was decided by the efficiency of Giron, who was more accurate with his serve, landing 59 per cent of his first serves fair compared to 47 per cent for Duckworth.

The Australian actually created more break point chances – eight to three – but while he converted two of his eight chances, Giron turned all three into breaks.

While the top half of the draw played out as the seeding predicted, there was an upset in the late window as Christopher O'Connell eliminated second seed Jenson Brooksby 6-4 4-6 7-5.

The Australian had a clear serving advantage, smacking 14 aces compared to four for Brooksby, and he also racked up a massive 50 winners with 16 unforced errors. Brooksby had 24 winners with 21 unforced errors.

Despite being the better shot-maker on the day, O'Connell had to save two match points to keep his chances alive, and then broke Brooksby as the American tried to serve it out, rattling off four consecutive games to end the match.

O'Connell will face Brandon Nakashima in the semi-final after he emerged victorious 6-3 4-6 6-4 against Daniel Elahi Galan.

Nakashima has now won five of his past six matches, with the only loss in that stretch coming against Jannik Sinner in the US Open.