Roger Federer and Alexander Zverev have won their Laver Cup doubles match.
The duo's straight sets victory over Jack Sock and Denis Shapovalov results in Team Europe leading Team World 3-1 after day one in Switzerland.
Earlier on the opening day Shapovalov went down to Dominic Thiem.
Meanwhile, Greece's Stefanos Tsitsipas easily triumphed over American Taylor Fritz.

Pakistan survive Dutch scare in T20 World Cup opener
Arqoub Al Sadeera Race to conclude 10th Al Salam Cycling Championship
Open Masters Games Abu Dhabi welcomes over 25,000 athletes
Ekaterina Alexandrova rallies to advance to Abu Dhabi finals
Sooryavanshi's record 175 guides India to Under-19 World Cup glory
