Two-time defending champion Martina Hingis defeated Amélie Mauresmo in the final, 6–2, 6–3 to win the women's singles tennis title at the 1999 Australian Open. It was her third Australian Open singles title and fifth and last major singles title overall. With the win, she joined Margaret Court, Evonne Goolagong, Steffi Graf, and Monica Seles as the only women to win three consecutive Australian Open titles. Hingis also became the only woman to win three consecutive Australian Open titles in singles and doubles simultaneously.
Serena Williams defeated Martina Hingis in the final, 6–3, 7–6(7–4) to win the women's singles tennis title at the 1999 US Open. It was her first major singles title, the first of an eventual Open Era joint-record six US Open titles, and the first of an eventual Open Era record 23 major singles titles. Williams became the first African American woman in the Open Era to win a singles major.
Venus Williams defeated the defending champion Lindsay Davenport in the final, 6–3, 7–6(7–3) to win the ladies' singles tennis title at the 2000 Wimbledon Championships. It was her first major singles title. Williams lost only one set during the entire tournament, to Martina Hingis in the quarterfinals.
Lindsay Davenport defeated the three-time defending champion Martina Hingis in the final, 6–1, 7–5 to win the women's singles tennis title at the 2000 Australian Open. It was her first Australian Open title and her third and last major singles title. She did not lose a set during the tournament. Hingis' loss ended her 27-match win streak at the Australian Open, dating back to 1997.
Iva Majoli defeated Martina Hingis in the final, 6–4, 6–2 to win the women's singles tennis title at the 1997 French Open. Majoli became the first Croat to win a major title. This was the only major match Hingis lost in the 1997 season, preventing her from achieving the Grand Slam. Hingis was on a 35-match winning streak, dating to the start of the season in Sydney.
Martina Hingis defeated Mary Pierce in the final, 6–2, 6–2 to win the women's singles tennis title at the 1997 Australian Open. It was her first major singles title, and she did not lose a set en route. At the age of 16 years and three months, Hingis remains the youngest woman to win a major singles title in the Open Era, and the youngest since Lottie Dod at the 1887 Wimbledon Championships.
Defending champion Steffi Graf defeated Monica Seles in a rematch of the previous year's final, 7–5, 6–4 to win the women's singles tennis title at the 1996 US Open. Graf did not lose a set during the tournament.
Defending champion Steffi Graf defeated Arantxa Sánchez Vicario in a rematch of the previous year's final, 6–3, 7–5 to win the ladies' singles tennis title at the 1996 Wimbledon Championships. It was her seventh Wimbledon singles title and 20th major singles title overall. It was also the second consecutive major final between the two women, with Graf winning the French Open crown over Sánchez Vicario a month earlier.
Martina Hingis defeated Monica Seles in the final, 6–2, 6–1 to win the women's singles tennis title at the 1997 Miami Open. At 16 years and 6 months, Hingis became the youngest-ever world No. 1 player in women's singles. This marked the first time that neither Steffi Graf, Seles nor Arantxa Sánchez Vicario were ranked No. 1 since August 17, 1987.
Monica Seles was the defending champion but did not compete that year.
Martina Hingis defeated Monica Seles in the final, 3–6, 6–3, 7–6 to win the singles tennis title at the 1997 Family Circle Cup.
Martina Hingis defeated Monica Seles in the final, 6–7(5–7), 6–4, 6–4 to win the singles tennis title at the 2000 WTA Tour Championships. It was her second Tour Finals singles title.
Conchita Martínez defeated Amélie Mauresmo in the final, 6–4, 6–4 to win the singles tennis title at the 1998 WTA German Open.
The 1999 Open Gaz de France singles was the singles event of the seventh edition of the Open GDF Suez; a WTA Tier II tournament held in Paris, France. Mary Pierce was the defending champion but did not compete that year.
Defending champion Venus Williams defeated her sister Serena in the final, 6–1, 4–6, 6–4 to win the women's singles tennis title at the 1999 Miami Open.
Amélie Mauresmo defeated Jennifer Capriati in the final, 6–4, 2–6, 6–3 to win the singles tennis title at the 2001 WTA German Open.
Serena and Venus Williams defeated Martina Hingis and Anna Kournikova in the final, 6–3, 6–7(2–7), 8–6 to win the women's doubles tennis title at the 1999 French Open. It was the first major title for the Williams sisters, and would be their first step towards completing the career Golden Slam in doubles.
Venus Williams defeated Mary Pierce in the final, 6–4, 6–2 to win the women's singles tennis title at the 1999 Italian Open.
Martina Hingis defeated Julie Halard-Decugis in the final, 6–0, 6–1 to win the singles tennis title at the 1999 WTA German Open.
The 1999 Porsche Tennis Grand Prix doubles was the tennis doubles event at the 1999 Porsche Tennis Grand Prix, the twenty-second edition of the most prestigious tournament in Baden-Württemberg. Lindsay Davenport and Natasha Zvereva were the defending champions, but they did not compete together this year. Davenport competed with Martina Hingis as the first seed, while Zvereva competed with Elena Tatarkova. Davenport and Hingis withdrew in the quarterfinals due to Davenport having a wrist injury, whilst Tatarkova and Zvereva were knocked out in the first round.
Lindsay Davenport 
Martina Hingis 
