Team Europe's Alexander Zverev gets input from non-playing captain Bjorn Borg, left, and team-mate Roger Federer during his victory over the World team's Denis Shapovalov on the opening day of the inaugural Laver Cup in Prague ©Getty Images

A Europe team guided by Bjorn Borg took a 3-1 lead over the Rest of the World, whose non-playing captain is John McEnroe, on the opening day of the inaugural Laver Cup in Prague.

The three-day tournament, named after Australia's 11-times grand slam winner Rod Laver, involves players such as Roger Federer, Rafael Nadal, Marin Cilic and Nick Krygios in a tennis version of golf's Ryder Cup.

The indoor hard court event opened at Prague's 16,700-capacity - and mostly full - O2 Arena, with morning session victories for Croatia's Cilic, who beat Frances Tiafoe of the United States 7-6, 7-6, and Austria's Dominic Thiem, who defeated American John Isner 6-7, 7-6, winning a unique first-to-ten tie break used to settle matches tied at a set-all 10-7.

In the first of the evening's matches, Germany's Alexander Zverev extended the European lead to 3-0 with a 7-6, 7-6 win over Denis Shapovalov of Canada.

Jack Sock gets approving looks from his non-playing captain John McEnroe after he and Nick Krygios took the first set for the World team in their evening doubles match against Tomas Berdych and Rafael Nadal of Europe ©Getty Images
Jack Sock gets approving looks from his non-playing captain John McEnroe after he and Nick Krygios took the first set for the World team in their evening doubles match against Tomas Berdych and Rafael Nadal of Europe ©Getty Images

But Australia's Kyrgios and American Jack Sock finished the evening by contributing Team World's first point by defeating home player Tomas Berdych and Spain's Nadal 6-3, 6-7, 10-7.

Each of today's matches was worth one point, but matches tomorrow will be worth two points and Sunday's [September 24] concluding programme will feature three-pointers only.

The first team to reach 13 points will win the inaugural Laver Cup, with a doubles decider played if the scores are tied at 12-all.

For days two and three, one captain will submit his card blind in the morning for the opposing captain to review before selecting his players.

This will determine the schedule for the second and third day's play.

Team Europe captain Borg will choose which day to take the home advantage and will submit his playing line-up after reviewing Team World's selection.