She first caught the eye of the tennis world when she reached the final of the junior Wimbledon tournament in 2004, losing to Kateryna Bondarenko. In 2004 she also went 26-0 on the challenger circuit, and won all 4 events that she entered, two of them as a qualifier. Her first professional breakthrough occurred in October of 2004 when she took Venus Williams to two tie breaks before losing 7-6(11) 7-6(6) in the second round of the Zurich Open in Zurich, Switzerland, this was after a tremendous 3 set battle with, then ranked, Number 27 Tatiana Golovin. She followed that up with a quarterfinal showing in Luxembourg the following week.

In 2005 Ivanovic burst onto the scene by winning her first career singles titles, as a qualifier, in Canberra, Australia. Her ranking continued to rise after impressive wins over Svetlana Kuznetsova, Nadia Petrova, Vera Zvonareva, all (at the time) Top 10 players. Later on she scored her biggest win as she knocked out local favorite and 3rd seed Amélie Mauresmo in the 2005 French Open's third round, before her tournament came to an end in the Quarterfinals after an encounter with Russia's Nadia Petrova. Later on in the year injury sidelined her from moving further up the rankings but she showed signs of great form in Zurich and Linz, by making the semi-finals in both. Her great year saw her end at Number 16 in the rankings. Ana said that She "hopes to be in the Top 10 next year."

Ana started off 2006 by playing at the Hopman Cup with fellow Serbian Novak Đoković where the pair narrowly missed the final. However, Ana had strong performances and both Ana and Novak endeared themselves to many Australian fans with charming personalities and entertaining play. To start off her WTA year she played in Sydney where she once again defeated Mauresmo, this time in straight sets, before falling to an in form Svetlana Kuznetsova in the quarterfinals.

She continued with some solid results, hammering Patty Schnyder in straight sets at Warsaw. Then her career breakthrough came, In August, as she announced herself in the list of tennis's elite. This came by dominating former world number 1, Martina Hingis in the Final of the Canada Masters, in which she won 6-2 6-3. This ultimately led to her taking out the United States Open Series in front of Kim Clijsters and Maria Sharapova. Many thought she would take out the US Open but she lost to a resurgent Serena Williams. After some shock early round losses to Olga Poutchkova in Bali and Venus Williams in Luxembourg Ana took a few weeks off to tend to a reoccuring injured right shoulder, which she had sustained around the same time last year. She made her return in Linz making it to the quarterfinals, before losing to former world number 1 Maria Sharapova in two tight sets. To finish off her year she had a disappointing run in Hasselt, Belgium, as she lost to Netherlands Michaella Krajicek.

Ana also played 9 tournaments in doubles this year teaming up with Maria Kirilenko and Sania Mirza. Ana and Maria made 2 Semi-Finals and a Final, in their impressive run which saw them end at number 17 in the annual 'Race to the Championships.'

Ana finished off 2006 as the 14th best ranked women in the world. She is only a few points off making her debut in the Top 10. In doubles, Ana crept up to finish at number 51 in the world, an improvement of her mediocre Top 200 finish last year.

Ana had an average start to 2007, first off participating in the Monidal Hardcourts, Gold Coast until falling to Shahar Peer of Israel 7-5, 4-6, 4-6 in the Quarter-Finals. She then moved down to Sydney where she was given a tough draw. After demolishing Australian Casey Dellacqua, she downed Nadia Petrova in straight sets, before losing, in the Quarter-Finals again, to an inform Nicole Vaidišová.

--Wikipedia