Serena avoids ‘Riske’ factor, books Wimbledon semi-final ticket

Serena Williams roared from a slump in the second set of her Wimbledon quarter-final encounter with fellow American Alison Risk, to book a place in the semi-final of the Wimbledon tournament.

Serena won 6-4 4-6 6-3. She awaits the winner of the match between Barbora Strycova and British favourite Johanna Konta.

Former world number one Simona Halep has also qualified for the semi-final, beating Chinese Shuai Zhang 7-6 6-1.

The Romanian will meet either Elina Svitolina or Karolina Muchova as she bids to reach a maiden final at the All England Club.