Peng Shuai (hip) forced to withdraw

World No. 15 Peng Shuai had to withdraw from the Texas Tennis Open before she even took the court Monday.

The top-seeded Shuai was slated to face wild card Melanie Oudin in the first round of the inaugural $220,000 event being held at the Hilton DFW Lakes in Grapevine, Texas, but was forced to bow out because of a left hip injury.

She was replaced by Akgul Amanmuradova, who had to retire with a lower back injury in the third set against Oudin.

Second-seed Dominika Cibulkova won in straight sets against Mirjana Lucic, 6-4, 6-0.

The WTA event is the first in Texas in 16 years.