Conversation so far:
What rank did Melanie Oudin end up with?
Melanie Oudin reached a career-high ranking of world No. 31 in April 2010
How long was Melanie Oudin playing before she reached No. 31 in April 2010?
Melanie Oudin turned professional in February 2008.
Where did Melanie Oudin play before becoming professional?
Are there any other interesting aspects about the Melanie Oudin article?
Melanie Oudin became the youngest woman since Serena Williams to reach the quarterfinals at the US Open, and the youngest since Sharapova to reach the quarterfinals at a major.

Question: How old was she when she played in the 2009 US Open?
Self-contained rewrite: How old was Melanie Oudin when she played in the 2009 US Open?