Williams defeated Alison Riske; Konta topped Dominika Cibulkova.
The 37-year-old beat Steve Johnson, 6-4, 6-4.
The Italian beat Gastao Elias, 6-3, 6-3.
The Swede plays Siniakova on Saturday. The Czech beat second-seeded Errani, 7-6 (2), 6-3, in the quarterfinals.
The Italian defeated Nikoloz Basilashvili, 6-3, 6-4.
Who made the grade at Wimbledon? We make our post-fortnight assessments.
Murray showed that his game is too good to be remembered as anything but a champion's.
Five bold predictions about a sport long averse to change.
Jelena Jankovic and Ana Ivanovic continue to fascinate us after all these years.