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.
João Souza João Olavo Soares de Souza (born 27 May 1988) is a Brazilian professional tennis player. Souza competes mainly on the ATP Challenger Tour, both in singles and doubles. He reached his highest ATP singles ranking, No. 69, on April 6, 2015, and his highest ATP doubles ranking, No. 70, on January 7, 2013. Souza is coached by former Brazilian player Ricardo Acioly. João Souza is also known as "Feijão" (Portuguese for Bean).