Wimbledon 2018

Sue Barker introduces further coverage of day 10 at the All England Club, where the ladies' semi-final singles matches are due to take place on the famous grass courts, featuring Jelena Ostapenko v Angelique Kerber and Julia Goerges v Serena Williams. Ostapenko won the French Open last year but had never previously progressed beyond the quarter-finals here, while Kerber was a runner-up in 2016 and also won the US and Australian Opens that year. Williams needs little introduction to the Wimbledon crowd as a seven-time singles champion here, while in contrast, this is the first time her opponent has been past the fourth round of any Grand Slam.