| Singles | |
|---|---|
| 2003 ASB Classic | |
| Champion |  Eleni Daniilidou |
| Runner-up |  Cho Yoon-jeong |
| Score | 6–4, 4–6, 7–6(7–2) |
| Draw | 32 |
| Seeds | 8 |
Anna Smashnova-Pistolesi was the defending champion, but retired in the semifinals against Cho Yoon-jeong.
Eleni Daniilidou defeated Cho 6–4, 4–6, 7–6(7–2) in the final to win her title.. [1]
Anna Smashnova-Pistolesi (semifinals, retired) Eleni Daniilidou (champion)
Tatiana Panova (first round)
Anne Kremer (first round)
Paola Suárez (quarterfinals) Clarisa Fernández (second round)
Janette Husárová (first round)
Katarina Srebotnik (first round)| Semifinals | Final | ||||||||||||
| 1 | Anna Smashnova-Pistolesi | 62 | 2r | ||||||||||
| Cho Yoon-jeong | 77 | 2 | |||||||||||
| Cho Yoon-jeong | 4 | 6 | 62 | ||||||||||
| 2 | Eleni Daniilidou | 6 | 4 | 77 | |||||||||
 Emmanuelle Gagliardi | 4 | 3 | |||||||||||
| 2 | Eleni Daniilidou | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinal | ||||||||||||||||||||||||
| 1 | A Smashnova-Pistolesi | 6 | 6 | ||||||||||||||||||||||||
| Q | T Obziler | 4 | 3 | 1 | A Smashnova-Pistolesi | 6 | 77 | ||||||||||||||||||||
| H Nagyová | 4 | 2 | E Likhovtseva | 3 | 63 | ||||||||||||||||||||||
| E Likhovtseva | 6 | 6 | 1 | A Smashnova-Pistolesi | 6 | 6 | |||||||||||||||||||||
 M Tu | 7 | 3 | 6 | J Craybas | 3 | 1 | |||||||||||||||||||||
| M Suchá | 5 | 6 | 2 | M Tu | 4 | 4 | |||||||||||||||||||||
| J Craybas | 77 | 6 | J Craybas | 6 | 6 | ||||||||||||||||||||||
| 8 | K Srebotnik | 62 | 4 | 1 | A Smashnova-Pistolesi | 62 | 2r | ||||||||||||||||||||
| 3 | T Panova | 4 | 1 | Y-j Cho | 77 | 2 | |||||||||||||||||||||
| V Zvonareva | 6 | 6 | V Zvonareva | 6 | 6 | ||||||||||||||||||||||
 A Serra Zanetti | 3 | 68 |  A Barna | 3 | 4 | ||||||||||||||||||||||
| A Barna | 6 | 710 | V Zvonareva | 63 | 6 | 3 | |||||||||||||||||||||
| Y-j Cho | 68 | 6 | 6 | Y-j Cho | 77 | 1 | 6 | ||||||||||||||||||||
 P Wartusch | 710 | 2 | 0 | Y-j Cho | 7 | 6 | |||||||||||||||||||||
| Q |  R Voráčová | 61 | 7 | 4 | 6 | C Fernández | 5 | 2 | |||||||||||||||||||
| 6 | C Fernández | 77 | 5 | 6 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinal | ||||||||||||||||||||||||
| 7 | J Husárová | 1 | 2 | ||||||||||||||||||||||||
 C Black | 6 | 6 | C Black | 3 | 2 | ||||||||||||||||||||||
| L Granville | 6 | 6 | L Granville | 6 | 6 | ||||||||||||||||||||||
| WC |  S Stephens | 2 | 1 | L Granville | 6 | 3 | 4 | ||||||||||||||||||||
| R Grande | 62 | 1 | E Gagliardi | 3 | 6 | 6 | |||||||||||||||||||||
| E Gagliardi | 77 | 6 | E Gagliardi | 6 | 1 | 77 | |||||||||||||||||||||
| Q | A Harkleroad | 6 | 6 | Q | A Harkleroad | 2 | 6 | 65 | |||||||||||||||||||
| 4 | A Kremer | 3 | 0 | E Gagliardi | 4 | 3 | |||||||||||||||||||||
| 5 | P Suárez | 6 | 6 | 2 | E Daniilidou | 6 | 6 | ||||||||||||||||||||
| ME Camerin | 1 | 0 | 5 | P Suárez | 4 | 6 | 6 | ||||||||||||||||||||
 M Pierce | 6 | 7 | M Pierce | 6 | 4 | 4 | |||||||||||||||||||||
| A Rösch | 4 | 5 | 5 | P Suárez | 6 | 1 | 64 | ||||||||||||||||||||
| WC | L Baker | 5 | 6 | 2 | 2 | E Daniilidou | 1 | 6 | 77 | ||||||||||||||||||
| M Müller | 7 | 4 | 6 | M Müller | 3 | 0 | |||||||||||||||||||||
| Q |  S Asagoe | 3 | 2 | 2 | E Daniilidou | 6 | 6 | ||||||||||||||||||||
| 2 | E Daniilidou | 6 | 6 | ||||||||||||||||||||||||
Justine Henin-Hardenne defeated compatriot and rival 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, each time defeating Clijsters in the final. Clijsters would eventually win the title seven years later.
Serena Williams defeated the two-time defending champion, her sister Venus Williams, in a rematch of the previous year's final, 6–4, 6–3 to win the women's singles tennis title at the 2002 US Open. It was her second US Open singles title, her fourth major singles title overall, the third component of her first "Serena Slam", and her second consecutive major title won without losing a set.
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.
Maria Sharapova defeated the two-time defending champion Serena Williams in the final, 6–1, 6–4 to win the ladies' singles tennis title at the 2004 Wimbledon Championships. It was her first major title. The 17-year-old's victory over the six-time major champion was described by commentators as "the most stunning upset in memory". With the win, Sharapova entered the top 10 in rankings for the first time in her career. She became the third-youngest woman to win Wimbledon and the second Russian woman to win a major title.
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 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.
Anastasia Myskina defeated Elena Dementieva in the final, 6–1, 6–2 to win the women's singles tennis title at the 2004 French Open. It was her maiden major singles title, and she became the first Russian woman to win a major. Myskina became the first woman in the Open Era to win the French Open after saving a match point, doing so in the fourth round against Svetlana Kuznetsova. This marked the first time two maiden major finalists contested a final since the 1979 Australian Open. The final also made Russia the fourth country in the Open Era to have two countrywomen contest a major final.
Svetlana Kuznetsova defeated Elena Dementieva in the final, 6–3, 7–5 to win the women's singles tennis title at the 2004 US Open. She lost only one set during the tournament. Kuznetsova became the third Russian woman, after Anastasia Myskina and Maria Sharapova, to win a major that year and overall. This was also the second-ever all-Russian major final.
Venus Williams was the defending champion but did not compete that year.
Two-time defending champion Serena Williams defeated Elena Dementieva in the final, 6–1, 6–1 to win the women's singles tennis title at the 2004 Miami Open.
Elena Bovina was the defending champion, but chose not to participate that year.
Amélie Mauresmo won in the final against Venus Williams 6-7(6–8), 6–0, 3–0, retired due to straining an abdominal muscle.
Defending champion Serena Williams defeated Jennifer Capriati in a rematch of the previous year's final, 4–6, 6–4, 6–1 to win the women's singles tennis title at the 2003 Miami Open.
Justine Henin-Hardenne defeated Lindsay Davenport in the final, 6–1, 6–4 to win the women's singles tennis title at the 2004 Indian Wells Masters.
Kim Clijsters defeated Amélie Mauresmo in the final, 3–6, 7–6(7–3), 6–0 to win the women's singles tennis title at the 2003 Italian Open. It was her third title of the season, and the 13th overall in her career.
Amélie Mauresmo defeated Jennifer Capriati in the final, 3–6, 6–3, 7–6(8–6) to win the women's singles tennis title at the 2004 Italian Open. It was her second title of the season and the 12th of her career.
Venus Williams defeated Conchita Martínez in the final, 2–6, 6–2, 6–1 to win the singles tennis title at the 2004 Family Circle Cup. It was Williams' 30th career title.
Defending champion Justine Henin-Hardenne defeated Kim Clijsters in the final, 6–4, 4–6, 7–5 to win the singles tennis title at the 2003 WTA German Open. It was her third title of the year, and the ninth of her career.
Anna Smashnova-Pistolesi was the defending champion, but lost in second round to Marta Domachowska.
Eleni Daniilidou was the defending champion and successfully defended her title, by defeating Ashley Harkleroad 6–3, 6–2 in the final.
Émilie Loit and Katarina Srebotnik were the defending champions, but none competed this year.
Anna Smashnova-Pistolesi was the defending champion, but was forced to retire in her second round match against Sandra Kleinová due to a hamstring injury.