Top-seeded Danielle Collins of the United States remained on track for her first WTA final after reaching the Palermo Ladies Open quarterfinals on Thursday.

Collins beat Maddison Inglis 6-4, 6-1, and will face another Australian, seventh-seeded Astra Sharma on Friday.

Sharma, the winner of her maiden title in Charleston in April, defeated Natalia Vikhlyantseva of Russia 6-4, 7-5.

Also, fourth-seeded Zhang Shuai of China beat Francesca Di Lorenzo of the US 6-1, 6-2. Next up for the veteran is Olga Danilovic of Serbia.