Dominic Thiem and Jack Sock won their singles matches as Team Europe and Team World shared the spoils in the day session on the first day of the Laver Cup in Geneva on Friday.
Team Europe struck first as Austrian Thiem beat Canada's Denis Shapovalov 6-4 5-7 13-11, saving three match points in the super tiebreak -- a race to 10 points when the match goes into a third set.
"It's a really special thing with the tiebreak in the third," Thiem said. "It creates lots of close moments and match points on either side. It's also a little bit of luck at the end."
Thiem, ranked fifth in the world, needed only one break of serve to take the opening set, but the 20-year-old Shapovalov fought back to break twice in the second set to tie the game at one set apiece.
The young Canadian led 9-7 in the tiebreak before squandering his match points as Thiem clawed his way back to win the contest on his second match point.