She defected to the United States at the 1975 US Open , shortly before her 19th birthday .
She has won more singles and doubles tournaments than any other woman , but she was forced to defect from her homeland to the US in order to do .
She defected to the US   at the 1975 US Open , shortly before her 19th birthday .
She has won more singles and doubles tournaments than any other woman , but she was forced to defect from her homeland to the US in order to do .