Question: Which tennis player, Tatiana Golovin and John Newcombe, boasts a highest singles ranking of 12?
Sentence (from "John Newcombe"): John David Newcombe, AO, OBE (born 23 May 1944) is a former tennis player from Australia who is one of the few men to have attained a world No. 1 ranking in both singles and doubles.
Relevant evidence: Yes