Rafael Nadal and Roger Federer team up to win Laver Cup doubles against Sam Querrey, Jack Sock
Roger and Rafa overcome some shaky play to take the win in three. AP

PRAGUE — Rafael Nadal and Roger Federer joined forces to win the doubles in the new Laver Cup on Saturday.

They teamed up for the first time to defeat Sam Querrey and Jack Sock, 6-4, 1-6, 10-5, in the team event between Europe and the rest of the world.

"It was unbelievable," Nadal said.

The inaugural Laver Cup is at Prague's O2 Arena on an unusual black hard court.

Alexander Zverev, Marin Cilic, Dominic Thiem and Tomas Berdych also form the European team, while John Isner, Nick Kyrgios, Denis Shapovalov and Frances Tiafoe play for the world.

Europe needs two more victories from Sunday's four games to win.

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