You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Alex O'Brien and Jonas Björkman both reached what World ranking in doubles?" whose answer is No. 1.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Alex O'Brien highest doubles ranking
Useful Output:

Doc 1: O'Brien ascended to the No. 1 doubles ranking in the world in 2000 and won the U.S. Open men's doubles title in 1999 with Sebastien Lareau. O'Brien credits
Doc 2: Highest singles rank: No. 24 (March 11, 1996). Career doubles titles: 45 (40 w/Woodforde). Career prize money: $4,751,329.
Doc 3: Sebastien Lareau holds up the US Open trophy with doubles partner Alex O'Brien · Sébastien Lareau and Daniel Nestor celebrate their men's doubles
Doc 4: He did just that, reaching zeniths as the 30th-best singles and No. 1- ranked doubles player. On the tour, O'Brien banked his winning checks.
Doc 5: tallied an 11-10 doubles record, mostly in the No. 1 position with partner senior Akash Muppidi  registered a 5-6 ACC record and a 5-4 recorded against