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.

Jordan qualifies for the FIFA Arab Cup final
Sharjah Warriorz make it two in two with 11-run win over Gulf Giants
Bournemouth rescue draw with Man United in eight-goal thriller
Morocco beat UAE to reach FIFA Arab Cup final
Mid East Falcons win inaugural United Series Championship in Dubai
