stylistic:style_transfer, structural:reformatting
Focus on doubles

In 2000, Navratilova returned to the tour to mostly play doubles events, while rarely also playing singles. In her first singles performance in eight years, at Eastbourne in 2002, she beat world No. 22, Tatiana Panova, then lost in the next round to Daniela Hantuchová in three sets. In 2003, she won the mixed doubles titles at both the Australian Open and Wimbledon, partnering Leander Paes. This made her the oldest ever major champion (aged 46 years, 8 months). The Australian Open victory made her the third player in history to complete a "boxed set" of major titles by winning the singles, women's doubles, and mixed doubles at all four majors. The Wimbledon win allowed her to equal Billie Jean King's record of 20 Wimbledon titles (in singles, women's doubles, and mixed doubles combined) and extended her overall number of major titles to 58 (second only to Margaret Court, who won 64). Navratilova made a return to singles at the 2004 French Open after an absence of 10 years, but she was defeated by Gisela Dulko in the first round. Shortly afterwards, and despite being criticized for receiving a wildcard, Navratilova won a singles match over Catalina Castaño 6–0 6–1 at the first round of Wimbledon in 2004, aged 47 years and eight months, to make her the oldest player to win a professional singles match in the open era. Navratilova then lost her second round match with the same player who had beaten her at the French Open the previous month, Gisela Dulko, in three sets.

On Thursday, July 6, 2006, Navratilova played her last matches at Wimbledon, with partner Liezel Huber losing a quarterfinal match in women's doubles to fourth seeds and eventual champions Yan Zi and Zheng Jie, and later in the same day with partner Mark Knowles losing in the third round of mixed doubles to eventual champions Andy Ram and Vera Zvonareva. She had said that her last Wimbledon wasn't about breaking her record shared with Billie Jean King of 20 championships. In an interview, Navratilova was quoted as saying, "People keep saying that, but it so wasn't. I just wanted to win one more title here, period."