Her first title on the WTA Tour Dulgheru won in 2009 in Warsaw. Only come across the qualification into the main draw, she defeated in the final Alyona Bondarenko of 7:63, 3:6, 6:0. In 2010 she made with her victory over the defending champion and world number three Dinara Safina at the Italian Open in Rome for a surprise. Am. May 22, 2010 she successfully defended her title in Warsaw from the previous year. In the final, she sat down with 6:3 and 6:4 against Zheng Jie of China.
The year 2011 did not start well for the Romanian. After Erstrundenniederlagen among others at the Australian Open and the WTA tournament in Sydney, Dubai and Indian Wells she could only tie in Miami on the achievements of the previous season. After a bye in the first round she moved after victories over Chanelle Scheepers smooth, Johanna Larsson and Peng Shuai prior to the quarter- finals, where she defeated Maria Sharapova in their career until then the longest match 6:3, 6:7, 6:7.
One reason for her sudden power boost she saw especially in working with her new coach Gabriel Urpi, who had been in charge of the Italian Flavia Pennetta many years and this could result in the top 10 in the world rankings as the first player of their country.
Because of the repeatedly occurring knee problems they could not confirm their successes on sand from the previous year. Her best result was reaching the quarter- finals at the WTA tournament in Brussels, where she Wera Swonarjowa had to give 0:6, 1:6 defeat. At the French Open and at Wimbledon, she lost in the second round in 2011, respectively, before they are at the end of the turf season took several weeks to pause for regeneration. At the U.S. Open she was at the start again and made with her success over the reigning Wimbledon champion Petra Kvitová on the opening day for the biggest sensation. Physically not in top shape, she lost then clearly against her compatriot Monica Niculescu 3:6, 0:6. After task against Svetlana Kuznetsova at the WTA tournament in Beijing, she finished the season early.