Alexander Zverev clinched victory for Team Europe in the Laver Cup for a third straight year when he won a thrilling deciding match against Milos Raonic.

With Roger Federer and Rafael Nadal roaring him on from courtside, Zverev fended off Raonic 6-4 3-6 10-4 amid raucous scenes in Geneva, holding his nerve in the match tie-break.

It gave Bjorn Borg's Team Europe squad a 13-11 triumph over Team World in the three-day event.

Team World had surged from 7-5 behind to lead early on Sunday, with captain John McEnroe's team benefiting from Nadal having to withdraw from his singles and doubles matches with an inflamed hand.

Nadal was meant to play doubles with Federer, but Stefanos Tsitsipas stepped in as his substitute and the American pair of John Isner and Jack Sock pulled off a 5-7 6-4 10-8 victory.

When Nadal's singles replacement, Dominic Thiem, slid to a surprise 7-5 6-7 (3-7) 10-5 defeat against Taylor Fritz, Team World pocketed another three points and were close to carrying off the trophy.

Federer returned to court to exact revenge over Isner, however, beating the big-serving American 6-4 7-6 (7-3) in singles as Nadal roared encouragement to his long-time rival, a rare sight.

That outcome teed up Zverev and Raonic for the winner-takes-all finale.

Australian great Rod Laver, from whom the event takes its name, watched on as a backhand winner from Zverev set up match point, and the German swept a cross-court forehand out of the reach of Raonic to tie up the title.

Zverev has had a rocky season on tour, so this was sweet satisfaction.

Pointing to his team-mates he said: "Those guys were screaming at me in the locker room before the tie-break.

"[They were saying] this is how I could turn my season around, this is how I can get my confidence back. I played an unbelievable tie-break.

"I'm super happy and super thankful to Rafa and Roger and the rest of the team. Without them on the bench today I would not have done it.

"It's very special, especially playing in front of those guys, and them trusting me to play the last singles match we have is an unbelievable feeling.

"This event is something I hope to play every single year of my career."

Federer added at the trophy presentation: "It's a big moment. What a weekend it's been. It's been absolutely incredible. Congratulations Team World on an unbelievable fight, I can't wait for the next one in Boston."

Team Europe captain Borg said: "It's been unbelievable tennis. Team World came once again very close but we won the right points and had maybe a bit of luck. I'm very proud of my team. I'm a very happy captain."

Losing Team World skipper McEnroe said: "I want to congratulate Team Europe. It was awesome. You found a way to get it done.

"I'm getting very sick and tired of you, I've got to say.

"I've got to congratulate my old buddy and rival Bjorn Borg for beating me once again, unfortunately.

"I'm so proud of these guys you fought your heart out."

The result means Europe have won all three editions of the Laver Cup, which was first held in Prague in 2017 and then contested in Chicago in 2018.

Coco Gauff defeating defending US Open champion Naomi Osaka would be bad for tennis, according to John McEnroe.

Fifteen-year-old Gauff set up a mouth-watering clash with world number one Osaka by winning a thriller with Timea Babos on Thursday.

Having made it to the fourth round of Wimbledon as a qualifier, beating Venus Williams in the process, Gauff has become the story of the first week of a grand slam for the second successive major.

She will face Osaka, a player who has also experienced great success at a young age, with the Japanese winning two slams by the age of 21, on Saturday.

But McEnroe, a three-time Wimbledon champion and four-time US Open winner, believes a victory over the top player on the planet would do more harm than good.

He told ESPN: "I hope she doesn't beat Osaka, I think it would be a little too much, too soon.

"Osaka is someone who's teetering with her confidence, she's injured. However, she's the defending champion. I don't think it would be great for women's sports.

"I think it would be too much for Coco, right here at this age, it wouldn't be a good sign for the sport if a 15-year-old is beating the defending US Open champion."

Drawing parallels between Gauff's rapid progress and his own run to the Wimbledon semi-finals as an 18-year-old, McEnroe added: "I played [Jimmy] Connors in the semis and I was happy I lost.

"I felt like things happened so fast, it allowed me a year to reflect. That was big for me."

However, McEnroe continues to be blown away by Gauff's powers of resilience, with both her matches at Flushing Meadows this week having gone the distance.

"At 15, the way she keeps battling and is able to utlilise whatever resources are necessary, including the crowd, is very impressive," he said. 

"Babos tried to break her down physically, she's 15, she should break down physically in a two-and-a-half-hour match.

"The fact that she's as fit as she is and can cover the court but mentally to be just as strong is an amazing quality, that's why I said the other day I think she's going to be the best player in the world in three or four years."

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