Jennifer Capriati defeated Martina Hingis in the final, 6–4, 6–3 to win the women's singles tennis title at the 2001 Australian Open. With the win, Capriati returned to the top 10 in rankings for the first time since 1993.
Serena Williams defeated her sister Venus Williams in the final, 7–6(7–4), 3–6, 6–4 to win the women's singles tennis title at the 2003 Australian Open. It was her fourth consecutive major singles triumph, completing the "Serena Slam", both a non-calendar year Grand Slam and the career Grand Slam. It was also Venus' record fourth consecutive runner-up finish at a major, losing every final to Serena. Serena saved two match points and was 1–5 down in the third set against Kim Clijsters in the semifinals. This marked the first Australian Open final without Martina Hingis since 1996.
Justine Henin-Hardenne defeated Kim Clijsters in the final, 6–3, 4–6, 6–3 to win the women's singles tennis title at the 2004 Australian Open. It was her third major title, and her third win over Clijsters in a major final, after her victory at the 2003 French and US Opens. Clijsters would eventually win the title seven years later.
Justine Henin-Hardenne defeated Kim Clijsters in the final, 7–5, 6–1 to win the women's singles tennis title at the 2003 US Open. She lost only one set during the tournament.
Justine Henin-Hardenne defeated Kim Clijsters in the final, 6–0, 6–4 to win the women's singles tennis title at the 2003 French Open. It was her first major singles title, and she became the first Belgian player to win a major; Clijsters was attempting to achieve the same accolade. The final made Belgium the third country in the Open Era to have two countrywomen contest a major final.
Virginia Ruano Pascual and Paola Suárez were the two-time defending champions, but were defeated in the final by Kim Clijsters and Ai Sugiyama 7–6(7–5), 2–6, 7–9.
Serena and Venus Williams were the defending champions, but lost in the third round to Elena Dementieva and Lina Krasnoroutskaya.
Daniela Hantuchová was the defending champion but lost in the fourth round to Amanda Coetzer.
Serena Williams and Venus Williams defeated Virginia Ruano Pascual and Paola Suárez in the final, 4–6, 6–4, 6–3 to win the women's doubles tennis title at the 2003 Australian Open.
Serena Williams was the defending champion, and successfully defended her title, defeating Jennifer Capriati in a rematch of last year's final, 4–6, 6–4, 6–1.
Martina Hingis defeated Lindsay Davenport in the final, 6–3, 6–2 to win the women's singles tennis title at the 2000 Miami Open. She did not lose a set, and lost only 21 games, en route to the title.
Kim Clijsters was the defending champion, but did not compete this year due to a recovery from a cyst surgery.
Lisa Raymond and Rennae Stubbs were the defending champions, but competed this year with different partners. Raymond teamed up with Lindsay Davenport and lost in the first round to Anna Kournikova and Chanda Rubin, while Stubbs teamed up with Conchita Martínez and lost in the final to tournament winners Kim Clijsters and Ai Sugiyama, 6–3, 6–3.
Martina Hingis was the defending champion, but did not compete this year. Hingis would retire from professional tennis one month later.
Lindsay Davenport was the defending champion, but lost against Chanda Rubin in the final, 5–7, 7–6(7–5), 6–3.
Venus Williams was the defending champion and successfully defended her title by defeating Jelena Dokic 6–2, 6–2 in the final.
Venus Williams was the defending champion, but lost in quarterfinals to Meghann Shaughnessy.
Serena Williams was the defending champion, but was forced to withdraw due to a left knee tendonitis.
Kim Clijsters was the defending champion, but was forced to withdraw due to a left ankle injury.
Venus Williams was the defending champion, but did not compete this year.
Kim Clijsters 
Lindsay Davenport 
