Australian Open champion Angelique Kerber was the first woman through to the Wimbledon semi-finals with a straight-sets win over Simona Halep.
The German, seeded fourth, beat Romania's fifth seed 7-5 7-6 (7-2) on Centre Court to reach the last four for the second time.
Kerber will play seven-time champion Venus Williams or Kazakhstan's Yaroslava Shvedova in the semi-finals.
Serena Williams plays Russian Anastasia Pavlyuchenkova later on Tuesday.
Slovakian 19th seed Dominika Cubulkova and unseeded Russian Elena Vesnina complete the quarter-final line-up.
More to follow.
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