Britain’s Johanna Konta beat Zhang Shuai of China in straight sets to reach the last 16 at the Wuhan Open.
Konta, seeded 11th, won 6-3 6-3 and goes on to face Spanish seventh seed Carla Suarez Navarro in round three.
Another victory would see the 26-year-old Briton match last year’s run to the quarter-finals in Wuhan, China.
Konta remains on course to face Germany’s Angelique Kerber in the last eight after the world number one beat Kristina Mladenovic 6-7 (4-7) 6-1 6-4.
Kerber will play Petra Kvitova in the third round following the Czech 14th seed’s 6-3 6-1 win over Elina Svitolina.
“I was trying to find my rhythm because I was not playing my best in the first set,” said Kerber, who was playing her first match as number one after receiving a bye in the first round.
Sixth seed Venus Williams and eighth seed Madison Keys also made it through to the last 16.