She was scheduled to face Elise Mertens of Belgium in the semi-final, who will now receiveawalkover into the final.
2
Razzano, the No 26 seed, receivesawalkover into the fourth round.
3
Venus receivedawalkover into the third round.
4
Katie Taylor has receivedawalkover into the semi-finals of the Women's World Championships in Jeju, South Korea.
5
Williams will face Sofia Kenin for a last-16 spot, after her fellow American receivedawalkover following Canadian Bianca Andreescu's withdrawal through injury.
6
The Central African Republic receivedawalkover when Sao Tome e Principe said financial constraints prevented them travelling to Bangui for the first leg.
7
The 25-year-old was due to meet Nick Walker of Chester but his opponent receivedawalkover to the last 32.