Vaidišová was an Australian Open and French Open semifinalist and also reached the quarterfinals at Wimbledon. Vaidišová started playing tennis when she was six years old, enrolling to train at Nick Bollettieri's tennis academy in Bradenton, Florida. Her serve was considered herbiggest weapon. On 9 August 2006, at the age of 17 years, three months, and two weeks, she became the 12th-youngest player in WTA Tour history to be ranked in the top 10. She achieved a career-high ranking of World No. 7 on 14 May 2007. Her form dipped shortly after, and at the time her retirement was announced in 2010, she was ranked at No. 177.
From March 2009, she was coached by herstepfather, Ales Kodat, who replaced David Felgate. By the end of 2009, she had hired top coach Eric van Harpen. Her stepfather announced that she had retired in March 2010, citing "lack of interest in tennis" as the primary reason.
2003–2004: Instant success
Vaidišová debuted in 2003 by reaching three consecutive finals: won $10K ITF/Plzeň-CZE, her only event in 2003, without dropping a set.In 2004, her first full year as a professional, Vaidišová finished the year as a top 100 player. As a qualifier at only her third WTA Tour main draw at inaugural Vancouver, Vaidišová became the sixth-youngest singles champion in tour history at an age of 15 years, three months, and 23 days. She also became the lowest-ranked player (World No. 180) and second qualifier (of three) to win a title in2004. Vaidišová won her second title of the year at Tashkent, defeating Virginie Razzano in the final. On 18 October, she made her top 100 debut at World No. 74, becoming the youngest player in the top 100 at the time.
Later in the year, Vaidišová reached the quarterfinals at the Japan Open Tennis Championships in Tokyo. Vaidišová made her Grand Slam debut at the US Open, losing to defendingchampion and World No. 1 Justine Henin in the first round.
Vaidišová finished the year with two WTA titles and a win-loss record of 31–8.
2005–2007: Consistency and top 10 debut
In early January, Vaidišová reached her first quarterfinal of the season in Hobart. Vaidišová picked up her first Grand Slam singles victory in her Australian Open debut, by reaching the third round before falling totop seed Lindsay Davenport.
In April, Vaidišová made her top 50 debut at World No. 47 and reached her first career Tier I quarterfinal at the Family Circle Cup. She posted her first top 10 victory over defending French Open champion Anastasia Myskina, before eventually losing to Patty Schnyder in the quarterfinals, and making her top 40 debut as a result at World No. 34 on 18 April. In May,Vaidišová reached her first Tier III final in Istanbul, losing to top seed Venus Williams in the championship match. She made her debut at the French Open where she fell to 22nd-seeded Francesca Schiavone in the second round.
In August, Vaidišová reached the quarterfinals at Toronto, losing to Justine Henin. At the US Open, Vaidišová reached the fourth round for the first time at a Grand Slam eventbefore her run was ended by Nadia Petrova.
Vaidišová's captured her first title of 2005 (and third of her career) in Seoul, defeating top seed Jelena Janković in the final without dropping a set during the week. She followed by winning her second straight tour singles title in Tokyo, winning when Tatiana Golovin retired in the final. On 10 October, Vaidišová made her top 20 debut at World No. 18 andextended her winning streak to 15 matches, by winning her third consecutive tour singles title and fifth of her career; she defeated Nadia Petrova for the first time in the final of the Bangkok. With her three consecutive titles, Vaidišová became the first player since Lindsay Davenport in 2004 to win three titles in three weeks, and also became the sixth woman to win five Tour singles titles...