Nick Kyrgios, John Isner and Reilly Opelka have been named by Team World captain John McEnroe as his final three picks for the Laver Cup.

The trio join Denis Shapovalov, Felix Auger-Aliassime and Diego Schwartzman for the team event which runs from September 24-26 at TD Garden in Boston.

Laver Cup newcomer Opelka rose to a career-high world number 23 ranking en route to his first ATP Masters 1000 final in Toronto and defeated world number three Stefanos Tsitsipas, who will play for Bjorn Borg's Team Europe.

Isner, who has featured for Team World since the inaugural event in 2017, reached the semi-finals in Toronto and claimed his 16th ATP Tour title in Atlanta at the start of August.

He described the Laver Cup as "a highlight of my year", adding: "To be on a team with guys we're normally competing against is so different and so much fun. We come together so well as a group, the chemistry is awesome and it's such a great environment to be part of."

Australian firebrand Kyrgios is a striking inclusion in Team World's roster, while Team Europe will be without their big three: Roger Federer, Rafael Nadal and Novak Djokovic.

Federer and Dominic Thiem were expected to take part in this year's event, though both were forced to withdraw with injuries.

However, Borg's men still boast six of the world's top 11. World number two Daniil Medvedev leads the line-up, with Tsitsipas and Tokyo Olympics gold medallist Alexander Zverev for company.

Casper Ruud, who collected a 14th win in his last 15 completed matches on tour when he beat Opelka on Wednesday, will feature, while Andrey Rublev and Wimbledon finalist Matteo Berrettini complete the six-man team.

Team Europe have landed the title in each of the three editions of the tournament so far, with Prague, Chicago and Geneva having served as hosts.

Daniil Medvedev lived up to his top-seed billing by overcoming Reilly Opelka in straight sets in the National Bank Open final.

World number two Medvedev prevailed 6-4 6-3 in Toronto on Sunday as he became the first Russian to win the ATP tournament since Marat Safin in 2000.

Medvedev now holds four of the nine ATP Masters 1000 titles, having also previously come out on top in Cincinnati, Shanghai and Paris.

He saved all four break points faced against unseeded Opelka, who stunned Stefanos Tsitsipas in the semi-finals, and needed just 85 minutes to complete the job.

Reflecting on his latest tour triumph, Medvedev said: "I could not have dreamt of this at one point.

"With Novak [Djokovic] and Rafael [Nadal] playing, it seemed like an untouchable achievement. Now I have four wins in five finals, which is a good score. I am just happy. 

"Playing Canada and Cincinnati, the goal is to win as many matches as possible. I was able to do it two years ago and I will try and do it again."

Opelka was competing in his maiden final at this level and started strongly, racing 40-0 ahead in the fourth game with some powerful hitting.

However, the 23-year-old – the first American to reach the final since Mardy Fish in 2011 – could not break his opponent as Medvedev recovered with some impressive serving to take the game.

Medvedev earned the first break in the following game and comfortably held to take the first set.

The Russian forced Opelka into errors in the second set and reeled off nine points in a row en route to breaking his opponent in the third game.

It was plain sailing from that point on as two-time beaten grand slam finalist Medvedev eased over the line to add another trophy to his collection.

Top seed Daniil Medvedev will face Reilly Opelka in the National Bank Open final after the American stunned Stefanos Tsitsipas in a three-set classic in Saturday's semi-finals.

World number 32 Opelka fought back from a set down in Toronto to knock out favoured third seed Tsitsipas in two hours and 32 minutes.

The 23-year-old American triumphed 6-7 (2-7) 7-6 (7-4) 6-4, booking a spot in his first ATP Masters 1000 final.

Opelka sent down 17 aces but also hit 27 groundstroke winners in the shock victory over 2021 Australian Open semi-finalist Tsitsipas who had beaten in-form Casper Ruud in the quarters.

"I played great," Opelka said in his on-court interview. “These courts suit my game, it is no coincidence that John Isner is in the other semi-final.

"Stefanos has definitely improved his returning. Come 5-5 in the first set, a lot of balls started to come back. He is a thinker and has a high tennis IQ, so it was expected, but that is what separates him from the rest of the pack."

Opelka was aided by an excellent first serve percentage of 72 per cent, winning 62 of 81 points when he made his first serve.

Both first two sets went to tiebreaks, with Tsitsipas failing to generate a break point until the third set. Opelka made the first break of the match in the seventh game of the third set and held serve twice after to seal victory.

World number two Medvedev cruised into the decider with a commanding win over John Isner in less than an hour.

Medvedev, who was runner-up in Toronto in 2019, won 6-2 6-2 over the big-serving American, with the match totaling 54 minutes.

Isner could only manage four trademark aces for the match, while the Russian had 11 and broke the American four times from seven opportunities.

Daniil Medvedev avenged a Wimbledon loss to Hubert Hurkacz in a three-set thriller while Stefanos Tsitsipas made impressively light work of the in-form Casper Ruud at the National Bank Open.

Top seed and world number two Medvedev appeared headed for another defeat to Hurkacz before fighting back to prevail 2-6 7-6 (8-6) 7-6 (7-5) and reach the semi-finals.

The Pole won a five-setter at Wimbledon in the pair's only previous meeting before going on to stun Roger Federer and reach the semis, but could not repeat his feat in Toronto. 

Though Medvedev failed to convert the only two break point opportunities he had, his work in the tiebreaks was enough to put him over the top as he served 23 aces to nine for Hurkacz. 

The Russian now faces a semi-final matchup against John Isner, who won a clash of veterans with 11th seed Gael Monfils 7-6 (7-5) 6-4.

Earlier Friday, Tsitsipas claimed a 6-1 6-4 victory over Ruud, who entered the clash having won each of his previous 13 matches. 

It was Tsitsipas' 45th win of the season, a figure unmatched by anyone else on the ATP tour, and he needed just 74 minutes to complete it.

The 23-year-old won each of the first five games of the match and only made four unforced errors in the opening set.

Although Norway's Ruud improved in the second, he failed to make the most of a rare break opportunity and that seemed to jolt Tsitsipas into life again, the Greek swiftly breaking and then serving out the match.

"It is very nice to see myself perform at this level," Tsitsipas said afterwards. "I was sticking close to the baseline and coming in, taking the ball early. It was my intention from the very beginning, and it worked perfectly.

"Playing against a guy like him, who gets every single ball back, is always very challenging. There is some sort of concentration levels you have to reach to perform to your best. These kinds of matches always teach me things that I can expose for next time."

Up next for Tsitsipas as he targets a place in the final is Reilly Opelka, the big-serving American who defeated Roberto Bautista Agut 6-3 7-6 (7-1), plundering 18 aces along the way.

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. 

Fifth seed Taylor Fritz defeated compatriot fourth seed Reilly Opelka in a three-set epic in the quarter-finals at the Atlanta Open on Friday.

Fritz, who reached last week's Los Cabos Open semi-finals and is currently ranked 36th in the world, edged out Opelka 7-6 (7-5) 6-7 (3-7) 7-6 (7-4) in just under three hours.

The pair sent down a combined 48 aces, with Fritz claiming 25 of them, with all sets going to tiebreakers, with no breaks of serve.

Third seed Cameron Norrie was bundled out by Finnish world number 78 Emil Ruusuvuori in straight sets.

Norrie, who won last week's Los Cabos Open for his maiden ATP Tour title, was beaten 7-6 (7-1) 6-3 by the Finn.

Ruusuvuori will take on teenager Brandon Nakashima in the semi-finals, after the American – who was runner-up to Norrie in Los Cabos - beat Jordan Thompson 7-6 (7-5) 7-5.

Sixth seed John Isner sent down 30 aces as he got past Australian qualifier Chris O'Connell 7-6 (7-5) 6-7 (3-7) 6-4.

Top seed Milos Raonic saw his stay at the Atlanta Open come to an early end with a three-set defeat to American Brandon Nakashima on Wednesday. 

The 19-year-old Californian Nakashima, ranked 115th in the world, prevailed 5-7 6-3 7-6 (7-4) over world number 22 Raonic in their first meeting. 

The big-serving Canadian had 10 double faults to go with his 27 aces, while Nakashima did not commit one double fault and managed 13 aces. 

It was the latest in a string of recent wins over established players for Nakashima, who stunned Sam Querrey and John Isner last week at Los Cabos before falling to Cameron Norrie in the final. 

Nakashima next faces Australia's Jordan Thompson, who beat Peter Gojowczyk of Germany 7-6 (8-6) 6-4 to reach the quarter-finals. 

In the other half of the draw, fifth seed Taylor Fritz rallied to defeat fellow American Steve Johnson 6-7 (5-7) 6-4 6-1 in a rematch of a quarter-final at Los Cabos, also won by Fritz. 

Fritz will face countryman Reilly Opelka, who outlasted Bjorn Fratangelo 7-6 (7-3) 7-6 (7-4). The 6-foot-11 Opelka pounded 25 aces to just three double faults, winning 84 per cent of his service points. 

Novak Djokovic dug deep in the face of fierce Roman resistance to set up a showdown with Rafael Nadal in the men's final at the Internazionali d'Italia.

World number one Djokovic came from a set down overnight to beat Stefanos Tsitsipas 4-6 7-5 7-5 early on Saturday, before returning to the court to face Italian Lorenzo Sonego in the evening.

The Rome crowd raucously rallied behind Sonego, who beat Andrey Rublev earlier in the day, and the 26-year-old rose to the challenge but eventually fell to a 6-3 6-7 (5-7) 6-2 defeat.

Djokovic had match points before serving for it at 6-5 in the second set, yet it was to prove a stirring game as the noisy home crowd encouraged Sonego, who snatched a gutsy break. The tie-break looked set to be wholly one-sided when Djokovic raced 3-0 ahead, but it was soon back on serve, partisan spectators at the Foro Italico roaring in delight at a double fault from the Serbian.

From 4-2 behind, Sonego surged to 6-4 ahead in the tie-break. He failed to convert a first set point when ripping a forehand into the net, but the set was his when Djokovic sent a backhand service return long.

Sonego then had 0-40 against the Djokovic serve at the start of the decider, but he could not force the break, and the top seed gained strength from that escape, eventually cruising to victory.

Five-time Rome champion Djokovic said on Amazon Prime: "I bounced back very well after the second set. Maybe if he started with a break up in the third, things would look differently. I also had my chances and I only had myself to blame for not closing the match in straight sets.

"But he's a quality player, very dynamic, it's not easy to play against him and obviously he had the crowd behind him. It was an electric atmosphere. In the end I managed to close out the match really well."

Looking ahead to tackling Nadal, Djokovic said: "I need to recover. Hopefully I'll have fresh legs because that's what I definitely will need and it's necessary to have a chance against Rafa. He also had some tough matches [this week] and hopefully I'll be fresh and I'll give it all."

While Djokovic and Sonego thrashed away into the night, nine-time champion Nadal had no such workload issues on Saturday.

Nadal beat Alexander Zverev on Friday to set up a semi-final against American Reilly Opelka, and the Spaniard snatched a 6-4 6-4 win from that contest to reach the title match.

Novak Djokovic's Internazionali BNL d'Italia quarter-final with Stefanos Tsitsipas was halted by persistent rain on Friday with the world number one a set and a game down.

Reigning champion Djokovic, who is seeking a sixth triumph in Rome, struggled to get going against Tsitsipas and trails 6-4 2-1 ahead of the scheduled resumption of play on Saturday.

The top seed lost serve in the first game and continued to make some uncharacteristic errors that saw him trail 4-1 at one point.

While Djokovic did earn a first break in the sixth game, Tsitsipas stood firm to take the opening set and was in total control when again breaking his opponent early in the next set.

However, soon after the Greek had opened up a 2-1 advantage, the worsening conditions led to a pause in proceedings and organisers were eventually forced to bring the day's play to an end.

Djokovic, who converted just one of his six break point opportunities, will return to the court on Saturday and will need to improve if he is to join Rafael Nadal in the final four.

Nadal exacted some revenge on Alexander Zverev earlier on Friday to reach the semi-finals for a 12th time.

The Spaniard lost to Zverev at the same stage of the Madrid Open seven days ago but responded to questions over his form by easing through this latest encounter.

Nadal, who saved two match points before beating Denis Shapovalov on Thursday, raced 4-0 ahead in the first set against Zverev and had little trouble seeing the job through.

Aiming for a record-extending 10th title in the Italian capital, Nadal saved all eight break points he faced in the second set to advance 6-3 6-4 in two hours.

"I played more solid than Madrid. Conditions are different," he said in his post-match interview. "Here the conditions are a little more normal. I was able to control a little bit more."

"I'm happy. I played a very solid match with not many mistakes, playing the way that I have to. It's an important victory for me against a great player."

Nadal will face Reilly Opelka for a place in the final, the American beating qualifier Federico Delbonis 7-5 7-6 (7-2) to reach his first ATP Masters 1000 semi-final.

Opelka entered the tournament on a six-game losing streak, but he kept his good run going in Rome by earning the only break of the opening set in the 12th game.

Both players held throughout the second set and it was big-serving Opelka who prevailed 7-2 in the tie-break.

The day's other quarter-final between Lorenzo Sonego and Andrey Rublev also fell victim to the bad weather and will get under way on Saturday.

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