Tsvetana Kirilova Pironkova is a Bulgarian tennis player who is best known for defeating Venus Williams three times at Grand Slam tournaments. She is currently the Bulgarian number 1 and has won six ITF titles in her career. As a junior in the field, she won the Atlantic Cup International Junior Tournament held in Bulgaria in 2001. In 2002, Pironkova played her first professional tournament at the $10,000 International Tennis Federation Tournament in Bucharest, Romania. Though she was not victorious in that tournament, she defeated Tina Schmassmann of Switzerland to win her first professional ITF event. The following year, he won three ITF singles titles: one in Orestiada, Greece and two in Istanbul. In 2007, Pironkova played in one of the biggest challenger events of the year in Bordeaux, winning the tournament with straight-set victories over Mathilde Johansson. Towards the end of 2010 season, Pironkova won 5th place at the sportsman of the year ceremony in Bulgaria which is held every year and determines top 10 sport achievements. Pironkova plays right handed, and uses a double backhand.