Gasquet, the No. 17, will face Kazakhstan's Andrey Golubev after beating Italy's Andreas Seppi 6-3 3-6 6-3 6-1.

CNN: Champion Djokovic backs calls for change in men's tennis

Murray faces Spain's Albert Montanes in the second round after his opponent Andrey Golubev retired at 6-2 3-0 down.

BBC: Britain's Andy Murray eases past Mathieu at China Open

And Golubev, ranked 150th, was broken three more times in the second set as Murray sealed victory in 58 minutes.

BBC: Unstoppable Murray retains title

Austra fought back against Kazakhstan in Astana on Saturday with Julian Knowle and Alexander Peya winning their doubles match against Andrey Golubev and Yuriy Schukin in straight sets 7-6 6-3 7-6.

CNN: Czech Republic win 7-hour Davis Cup doubles marathon

Andrey Golubev of Kazakhstan beat Germany's Mischa Zverev 6-7 6-4 7-6 and will play Victor Hanescu is the other semi-final after the Romanian eased past home favourite Michail Elgin 6-1 6-4.

BBC: Murray reaches St Petersburg semi