Safarova took a 5 - 4 lead .
Tsurenko , who replaced top - seeded Halep in the field after losing in qualifying , staved off elimination and took a 6 - 5 lead .
Safarova took a 5 - 4 lead , but Tsurenko , who replaced top - seeded Halep in the field after losing in qualifying , staved off elimination and took a 6 - 5 lead .