Evonne Goolagong Cawley was unable to reach World No. 1 in tennis.
The 1977 New South Wales Open , also known by its sponsored name Marlboro New South Wales Open , was a combined men 's and women 's tennis tournament played on outdoor grass courts at the White City Stadium in Sydney , Australia . Evonne Goolagong Cawley AO , MBE ( born 31 July 1951 ) is an Australian former World No. 1 tennis player .