Alex O'Brien and Jonas Björkman both reached what World ranking in doubles?
Alex O'Brien Alex O'Brien (born March 7, 1970 in Amarillo, Texas) is a retired professional tennis player from the United States, who competed on the ATP Tour. He became the world No. 1 doubles player in May 2000 and was ranked as high as world No. 30 in singles in June 1997.
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.