Petra Kvitova breezes into last eight

Petra Kvitova has dispatched of Flavia Pennetta in straight sets to seal a place in the quarter-finals of the women's Olympic singles at Wimbledon.

The Czech sixth seed broke the Italian once in the first set to take it 6-3.

The 22-year-old then blasted past Pennetta 6-0 in the second to complete the win in just one hour.

Kvitova's quarter-final opponent is Maria Kirilenko following the Russian 14th seed's victory over Julia Goerges of Germany.