Update: 21 from 28 correct
Muguruza retired
Goerges won in 2 sets
Gavrilova won in 2 sets
Vandeweghe won in 2 sets
Kvitova won in 2 sets
Lepchenko won in 3 sets
Pavlyuchenkova won in 2 sets
Wozniacki won in 3 sets
Svitolina won in 2 sets
Linette retired
Duan won in 2 sets
Kerber won in 2 sets
Cornet won in 2 sets
Cibulkova lost in 2 sets
Konta lost in 2 sets
Peng won in 3 sets
Siniakova lost in 2 sets
Stephens lost in 2 sets
Cirstea won in 2 sets
Petkovic won in 2 sets
Kuznetsova lost in 3 sets
Kasatkina win in 2 sets
Zhang won in 2 sets
Radwanska won in 2 sets
Sharapova won in 3 sets
Makarova won in 2 sets
Rybarikova won in 2 sets
Halep won in 3 sets