Bjorn Borg, left, and Roger Federer are relishing the Laver Cup ©Laver Cup

Team Europe will be favourites to win a third successive Laver Cup against Team World when the tennis version of golf's Ryder Cup starts in Geneva tomorrow – but Roger Federer has warned the match will be "extremely tight".

The 38-year-old with 20 singles grand slam titles to his name will line up alongside five team mates, including Spain's 19-times grand slam winner Rafael Nadal, against six players including Jack Sock and John Isner of the United States, and Australia's mercurial talent Nick Kyrgios.

Team Europe's four other players – Dominic Thiem, Alexander Zverev, Stefanos Tsitsipas and Fabio Fognini – are all inside the world's top 11, but Federer, who played a big part in the 2017 establishment of the event named after Australian legend Rod Laver, still believes the match will be tough.

"We have incredible depth," said Federer.

"As much as we're the favourites, I do think it's going to be extremely tight.

"They’re really good at doubles – Jack [Sock] is one of the world's best doubles players, if not the absolute best right now – and we know how hard it's going to be.

"But I'm so pumped that everybody's here, everybody seems excited, and everybody's basically ready to go."

There are three singles and one doubles match on each of the three days of the Laver Cup, with a one-set doubles decider available if points are level on Sunday evening.

The Laver Cup, being played at the Palexpo, became an official annual event on the Association of Tennis Professionals Tour event in May this year.

Dominic Thiem of Team Europe and Denis Shapovalov of Team World will meet in the opening match ©Laver Cup
Dominic Thiem of Team Europe and Denis Shapovalov of Team World will meet in the opening match ©Laver Cup

Europe, under non-playing captain Bjorn Borg, have won the Laver Cup twice, taking the inaugural event in 2017 by 15-9, and successfully defending their title with a 13-8 scoreline last year against a team led by John McEnroe.

Completing the Team World line-up will be Canada's Milos Raonic and Denis Shapovalov, respectively world-ranked 24 and 33, and Taylor Fritz of the United States, ranked 30th.

"It's going to be a nerve-wracking competition but I hope anyway that we're going to try and defend our titles," said Borg

"It's going to be a very exciting match – Team World has a strong team.

"In the previous years it's been two very close matches and I think it's going to be another close match this year."

McEnroe said: “We've got guys who can take the racket out of anyone's hand and the key is to get hot at the right time."

One thing Team Europe can rely on is fervent home support.

"I'm very proud to be playing in Switzerland," Federer said, 

"very proud to represent Team Europe here at the Laver Cup, and also having played maybe a little part in bringing it to Geneva."

The opening singles match tomorrow will see Thiem, world-ranked 5, take on Shapovalov.

Team World have yet to win an opening-day singles match in six attempts, but Shapovalov is hopeful that a recent upturn in form will make the difference.

Thiem has won both of their previous encounters, however.

"I'm just excited more than anything," Shapovalov said.

"Hopefully I can kick-start it for our team and get the first point, but for sure it's a tough match against Dominic."