Question: Who was ranked World No. 4 in 1965, Cliff Drysdale or Roberta Vinci?
Sentence (from "Cliff Drysdale"): Eric Clifford Drysdale (born 26 May 1941, Nelspruit, South Africa) is a former top-ranked professional tennis player of the 1960s and early 1970s who became a well-known tennis announcer.
Relevant evidence: Yes