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.
Mate Pavić Mate Pavić (born 4 July 1993) is a Croatian professional tennis player specialising in doubles. Mate won the 2016 US Open mixed doubles title in partnership with Laura Siegemund, and reached the 2017 Wimbledon Championships men's doubles finals partnering Oliver Marach.