China's Wang Qiang into last 16 after S.Williams withdraws from Miami Open

WASHINGTON, March 23 (Xinhua) -- Chinese number one Wang Qiang reached the last 16 after her opponent Serena Williams of the United States withdrew from their thrid round clash due to a left knee injury on Saturday.

"I am disappointed to withdraw from the Miami open due to a left knee injury," Serena said in a statement. "It was an amazing experience to play at the Hard Rock Stadium this year and would like to thank the Miami open for putting on an amazing event."

"I hope to be back next year to play at this one-of-a-kind tournament in front of the incredible fans here in Miami."

The former world No.1 started the Miami open with a tough three-set victory over Rebecca Peterson of Sweden, winning 6-3, 1-6, 6-1 to reach the third round. She did not show any signs of injury in that match.

Wang, seeded 18th in the event, will play against either compatriot Wang Yafan or American Danielle Collins in the round of 16.