Former winner Ai Miyazato pulled out of the HSBC Women's Champions in Singapore on Wednesday as she battles whiplash injuries from a car crash which also left American star Paula Creamer struggling to recover.

The Japanese world No 9 said she had stiffness in her neck, back and shoulders after Sunday's five-car pile-up in Bangkok as the players were en route to the airport following the Honda LPGA Thailand.

"I still have some stiffness in my neck, shoulder and back area but it is also a precautionary measure so as not to risk further injury this early in the season," the 2010 champion said in a statement, adding she was "very disappointed".