Carlos Alcaraz and Alexander Zverev slipped to a doubles defeat on the opening day of the Laver Cup as they were beaten by Taylor Fritz and Ben Shelton.

Carlos Alcaraz will team up with Alexander Zverev to take on American duo Ben Shelton and Taylor Fritz in the Laver Cup on Friday, September 20. The Laver Cup turns what is usually an individual, or at most pairs sport, into a competition with teams pitted against each other in a similar mold to the Ryder Cup.

American pair Taylor Fritz and Ben Shelton have edged Carlos Alcaraz and Alexander Zverev in doubles to tie the Laver Cup after the first day in Berlin.