Kuznetsova won a tight opening set after ending a brilliant baseline slugfest between the two with an overhead smash .
Kuznetsova pulled off a stunning upset when she ousted world number one Williams in the fourth round .
Kuznetsova , who pulled off a stunning upset when she ousted world number one Williams in the fourth round , won a tight opening set after ending a brilliant baseline slugfest between the two with an overhead smash .