Guangzhou, China -- Chinese players Han Xinyun and Zhang Shuai posted second-round upset victories Wednesday at the Guangzhou International tennis tournament in China.
Sania Mirza and Maria Elena Camerin also notched upsets, giving seeded players an 0-4 record Wednesday.
Han, a wild-card entrant, ousted fifth-seeded Chang Kai-China 1-6, 6-2, 6-4 behind eight service breaks. She won 55 percent of the points on Chang's serve and Chang hurt her own chances with nine double faults.
Zhang needed just 63 minutes to dispatch No. 8-seeded Chanelle Scheepers 6-1, 6-0. Scheepers had seven double faults and won only 14 points on serve.
No. 3-seeded Akgul Amanmuradova was also defeated, losing 6-4, 6-3 to Mirza, who dropped serve just once in the win.
