Serena Williams played down the prospect of facing her sister Venus in the final, saying that both are “just happy to be in the semi-finals.”

Serena will face Russian Elena Vesnina, the world number 50, who had only once before gone past the third round at Wimbledon but dismissed Slovakian Dominika Cibulkova 6-2 6-2.

The 21-time major champion looked ominously untroubled during her 6-4 6-4 win over Anastasia Pavlyuchenkova but insists she is not yet thinking about a showdown with her older sister.