Romanian world number two Simona Halep`s stuttering form continued as she became the latest seed to be dumped out of the inaugural Wuhan Open on Tuesday after an aggressive display by Garbine Muguruza.
The Spanish 20-year-old smashed 34 winners as she beat the second seed 2-6 6-2 6-3 and set up a third-round meeting with Ukrainian Elina Svitolina, who battled back from a 5-0 first set deficit to edge Germany`s Sabine Lisicki 7-6(3) 6-3.
Halep, who lost in the final of the French Open to Maria Sharapova in June, has won only four matches in her last four events and joins a long line of seeds to fall at the opening stages of the $2.4 million hard court event.
Italian 11th seed Sara Errani was ousted by American Alison Riske 6-4 6-4 while Swiss qualifier Timea Bacsinszky defeated 13th seed and U.S. Open semi-finalist Ekaterina Makarova of Russia 6-4 6-1.
On Monday, fifth seed Agnieszka Radwanska, ninth seed Ana Ivanovic, 12th seed Dominika Cibulkova, 14th seed Lucie Safarova and 15th seed Flavia Pennetta all made early-round exits.
Top seed and world number one Serena Williams gets her Wuhan Open campaign underway later on Tuesday against France`s Alize Cornet.