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.
Ola Jonsson Ola Jonsson (born 3 November 1966, in Stockholm, Sweden), is a former professional tennis player from Sweden. He enjoyed most of his tennis success while playing doubles. During his career he won two doubles titles and finished runner-up an additional two times. He achieved a career-high doubles ranking of world No. 90 in 1991.