Nicole Vaidišová is a Czech retired tennis player. 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 her biggest weapon. Her powerful groundstrokes, along with her serve, collaborated well together to produce an aggressive, all-round game. 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 her stepfather, 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.