Sharapova beat Romania 's Alexandra Cadantu 6 - 0 , 6 - 0 in just 48 minutes .
Kvitova defeated Ashleigh Barty .
Sharapova beat Romania 's Alexandra Cadantu 6 - 0 , 6 - 0 in just 48 minutes , while Kvitova defeated Ashleigh Barty .