China’s Li Na describes her second-set struggle against Simona Halep a wake-up call in her 6-2, 1-6, 6-0 second-round victory.

“I would like to say, welcome to the crazy women's tennis tour,” Li told reporters. “I think I was pretty good beginning of the match. But end of the first set, she called official. I thought, 'Maybe she be retire or something.'

"I was already like lose concentration on the court. When one set all, [I told myself] 'Wake up, she okay, she kick your ass already in the second set.  So you should ready for a final set.' "

Informed that her coach, Carlos Rodriguez, described her as a very nice person, who can be bad to herself, Li joked: “Okay, now I change. I will kill him first.”