Daria Gavrilova will lead the charge with Ashleigh Barty to take the other singles role and then combine with Casey Dellacqua in the doubles .
Daria Gavrilova at world No. 26 is ranked four places lower than Stosur .
Daria Gavrilova , who at world No. 26 is ranked four places lower than Stosur , will lead the charge with Ashleigh Barty to take the other singles role and then combine with Casey Dellacqua in the doubles .