Ilie "Nasty" Năstase is a Romanian former world No. 1 professional tennis player, one of the world's top players of the 1970s. Năstase was ranked world No. 1 between 1973 (23 August) and 1974 (2 June).
What nationality is Ilie Năstase, World No. 1 tennis player in 1973/1974, who won more than 100 ATP professional titles, 7 Grand Slam titles and 4 ATP World Tour Finals championships?
The most successful tennis player to date, with 8 singles titles and 12 doubles titles, in the WTA Tour Championships was originally a citizen of which country?
