Roger Federer rallied to beat Nick Kyrgios 4-6, 7-6 (6), 11-9 Sunday and clinch the new Laver Cup tournament for Europe on Sunday.
The three-day competition at Prague's O2 Arena pitted a team of the best six European players against the top six from the rest of the world. Seen by some as a tennis version of the Ryder Cup in golf, the inaugural Laver Cup was played on an unusual black hard court.
Rafael Nadal, Alexander Zverev, Marin Cilic, Dominic Thiem and Tomas Berdych also formed the European team, while Sam Querrey, John Isner, Jack Sock, Denis Shapovalov and Frances Tiafoe played for the world.
The tournament is to honor Rod Laver, an 11-time major champion who won two calendar-year Grand Slams.
Chicago will host it in 2018.
Rafael Nadal and Roger Federer took Team Europe to within two wins of lifting the Laver Cup after they played doubles together for the first time, but ruled out a full-time partnership on the tour.
The world's highest ranking duo handed Team Europe, skippered by Bjorn Borg, a 9-3 lead over Team World, captained by John McEnroe, after two days of action in Prague.
After Nadal and Federer had won their singles rubbers, all eyes at Prague's sold-out O2 Arena were then on the two legends who played on the same side of the net for the first time in careers which have stretched the best part of two decades.