In April and May French Open runner Simona Halep met the first real successes. First, at the ITF $50,000 tournament in Makarska, Halep began her campaign with wins over Ana Vrljić of Croatia and an upset victory over Ksenia Pervak. She defeated Anne Schäfer, without dropping a game, and beat second seeded Arantxa Rus to advance to the final. However, Halep fell to the top seed Tatjana Malek in three sets. She then reached the quarterfinals at the Bucharest ITF $100,000 tournament, losing to Andrea Petkovic.
Making her first attempt to qualify for a senior Grand Slam tournament at Roland Garros, she defeated 17th seed Michaëlla Krajicek in her first match, but fell to Vitalia Diatchenko, in three sets in the following round.
In August, Halep won the ITF $25,000 tournament in Maribor, defeating top seed Katalin Marosi in the final in two sets. She also made the semifinals of the indoors ITF $50,000 tournament in Minsk, Belarus and ITF $25,000 tournament in Opole, Poland in November.
At almost 18 years old, Halep decided that her large breasts was interfering with her game. She underwent mastopexy to reduce her breasts size to 34C from 34DD. She explained the decision, saying, “It’s the weight that troubles me. My ability to react quickly, my breasts make me uncomfortable when I play. I don’t like them in my everyday life, either. I would have gone for surgery even if I hadn’t been a sportswoman.” She also experienced back pain. She later revealed her reduced bust size at the French Open in May 2010. Since the surgery, she has moved up over 450 places in the world rankings