Which tennis player, Tatiana Golovin and John Newcombe, boasts a highest singles ranking of 12?
Tatiana Golovin: Tatiana Golovin (Russian: Татья́на Григорьевна Голови́на , "Tatyana Grigoryevna Golovina" ; born 25 January 1988) is a Russian-born French retired professional tennis player.
i don't know