Between Andrei Olhovskiy and Jelena Janković, who became a pro earlier?
Andrei Olhovskiy Andrei Stanislavovich Olhovskiy (Russian: Андрей Станиславович Ольховский ) (born 15 April 1966) is a former tennis player from Russia, who turned professional in 1989.
Nicolás Pereira Nicolás Pereira (born September 29, 1970 in Salto, Uruguay) is a former tennis player from Venezuela, who became International Tennis Federation Junior World Champion in 1988 after winning the French Open, Wimbledon and the US Open.