Watch and follow BBC TV and radio coverage of day nine of Wimbledon (UK only) LIVE: World number one Aryna Sabalenka v Laura Siegemund in quarter-finals Followed by: GB's Cameron Norrie v defending champion Carlos Alcaraz LIVE: Taylor Fritz 6-3 6-4 Karen Khachanov Followed by: Amanda Anisimova v Anastasia Pavlyuchenkova Siegemund has just enough top-spin for control.

The world No. 1 was thrown off by Siegemund's changes in pace and rhythm, but came through in three tight, tense sets.

Aryna Sabalenka was dragged into a bygone era on Tuesday and tormented for almost three hours on Wimbledon’s Centre Court before finally imposing her 21st-century power game to beat mesmeric Laura Siegemund for a place in the semi-finals.