Ana Ivanovic is a Serbian former professional tennis player. She was ranked as the world No. 1 in women's singles by the Women's Tennis Association (WTA) for 12 weeks. Ivanovic won 15 WTA Tour-level singles titles, including a major at the 2008 French Open. She was also the runner-up at the 2007 French Open and the 2008 Australian Open. Ivanovic qualified for the year-end WTA Finals three times, and won the year-end WTA Tournament of Champions twice, in 2010 and 2011. WTA world No. 1 from June 9, 2008 to August 10, 2008 — 9 weeks. Wiki link