| Singles | |
|---|---|
| 2003 Challenge Bell | |
| Champion |  Maria Sharapova |
| Runner-up |  Milagros Sequera |
| Score | 6–2, retired |
| Draw | 30 |
| Seeds | 8 |
Elena Bovina was the defending champion, but decided not to participate this year.
Maria Sharapova won the title, defeating Milagros Sequera 6–2, retired in the final.
Mary Pierce (semifinals) Maria Sharapova (champion)
Alicia Molik (withdrew)
Laura Granville (semifinals)
Emmanuelle Gagliardi (withdrew) Marion Bartoli (quarterfinals)
Anca Barna (second round)
Klára Koukalová (first round)
Rita Grande (second round) Samantha Reeves (first round)| Semifinals | Final | ||||||||||||
| 1 | Mary Pierce | 4 | 0 | ||||||||||
| Milagros Sequera | 6 | 6 | |||||||||||
| Milagros Sequera | 2 | 0r | |||||||||||
| 2 | Maria Sharapova | 6 | 0 | ||||||||||
| 4 | Laura Granville | 6 | 2 | 2 | |||||||||
| 2 | Maria Sharapova | 1 | 6 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Pierce | 6 | 77 | ||||||||||||||||||||||||
| J Craybas | 61 | 6 | 2 | I Benešová | 4 | 63 | |||||||||||||||||||||
| I Benešová | 77 | 4 | 6 | 1 | M Pierce | 6 | 6 | ||||||||||||||||||||
| J Schruff | 3 | 3 |  Ľ Kurhajcová | 3 | 3 | ||||||||||||||||||||||
| Ľ Kurhajcová | 6 | 6 | Ľ Kurhajcová | 6 | 6 | ||||||||||||||||||||||
| Ad Serra Zanetti | 63 | 6 | 4 | 9 | R Grande | 3 | 4 | ||||||||||||||||||||
| 9 | R Grande | 77 | 0 | 6 | 1 | M Pierce | 4 | 0 | |||||||||||||||||||
| 6 | M Bartoli | 6 | 6 | M Sequera | 6 | 6 | |||||||||||||||||||||
| WC |  M-È Pelletier | 4 | 2 | 6 | M Bartoli | 77 | 6 | ||||||||||||||||||||
| Q |  S Arvidsson | 62 | 6 | 7 | Q | S Arvidsson | 65 | 3 | |||||||||||||||||||
| Q | M Washington | 77 | 2 | 5 | 6 | M Bartoli | 6 | 3 | 1 | ||||||||||||||||||
| M Sequera | 6 | 6 | M Sequera | 1 | 6 | 6 | |||||||||||||||||||||
| Q | M Tu | 4 | 0 | M Sequera | 64 | 6 | 6 | ||||||||||||||||||||
| M Drake | 6 | 2 | 6 | M Drake | 77 | 1 | 2 | ||||||||||||||||||||
| 10 | S Reeves | 3 | 6 | 4 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | K Koukalová | 4 | 0 | ||||||||||||||||||||||||
| An Serra Zanetti | 6 | 6 | An Serra Zanetti | 3 | 2 | ||||||||||||||||||||||
| WC | M Marois | 2 | 0 |  J Zheng | 6 | 6 | |||||||||||||||||||||
| J Zheng | 6 | 6 | J Zheng | 7 | 4 | 5 | |||||||||||||||||||||
| S Taylor | 2 | 77 | 2 | 4 | L Granville | 5 | 6 | 7 | |||||||||||||||||||
| Q |  G Dulko | 6 | 62 | 6 | Q | G Dulko | 63 | 3 | |||||||||||||||||||
 K Brandi | 4 | 2 | 4 | L Granville | 77 | 6 | |||||||||||||||||||||
| 4 | L Granville | 6 | 6 | 4 | L Granville | 6 | 2 | 2 | |||||||||||||||||||
| 7 | A Barna | 7 | 6 | 2 | M Sharapova | 1 | 6 | 6 | |||||||||||||||||||
| E Fislová | 5 | 3 | 7 | A Barna | 6 | 5 | 1 | ||||||||||||||||||||
| A Cargill | 3 | 1 | A Jidkova | 1 | 7 | 6 | |||||||||||||||||||||
| A Jidkova | 6 | 6 | A Jidkova | 1 | 2 | ||||||||||||||||||||||
 E Callens | 6 | 4 | 6 | 2 | M Sharapova | 6 | 6 | ||||||||||||||||||||
 M Saeki | 3 | 6 | 2 | E Callens | 4 | 3 | |||||||||||||||||||||
| 2 | M Sharapova | 6 | 6 | ||||||||||||||||||||||||
Kim Clijsters defeated Mary Pierce in the final, 6–3, 6–1 to win the women's singles tennis title at the 2005 US Open. It was her first major singles title and the first of an eventual three US Open titles.
Maria Sharapova defeated Justine Henin-Hardenne in the final, 6–4, 6–4 to win the women's singles tennis title at the 2006 US Open. It was her second major title. She lost just one set during the tournament. By reaching the final, Henin-Hardenne became the eighth woman to reach all four major finals in a calendar year.
Maria Sharapova defeated Vera Zvonareva in the final, 6–1, 2–6, 6–0 to win the singles tennis title at the 2008 WTA Qatar Open.
Kim Clijsters defeated Justine Henin-Hardenne in the final, 7–5, 6–1 to win the women's singles tennis title at the 2005 Canadian Open.
Elena Dementieva was the defending champion, but she was defeated in the quarterfinals by Maria Sharapova.
Maria Sharapova was the defending champion, and successfully defended her title, defeating Jelena Janković 6–2, 4–6, 6–1 in the final.
Maria Sharapova was the two-time defending champion, but lost in the semifinals to Jamea Jackson.
Svetlana Kuznetsova defeated Maria Sharapova in the final, 6–4, 6–3 to win the women's singles tennis title at the 2006 Miami Open. It was her first Tier I title and sixth overall, and her first title of any kind since September 2004.
Aravane Rezaï was the defending champion, but she chose not to participate this year.
Caroline Wozniacki defeated Vera Zvonareva in the final, 6–3, 6–2 to win the women's singles tennis title at the 2010 Canadian Open.
Caroline Wozniacki defeated Elena Dementieva in the final, 1–6, 6–2, 6–3 to win the singles tennis title at the 2010 Pan Pacific Open. It was Dementieva's last WTA Tour singles final before her retirement from the sport later that year.
Maria Sharapova defeated Jelena Janković in the final, 4–6, 7–6(7–3), 6–3 to win the women's singles tennis title at the 2011 Cincinnati Masters.
Defending champion Maria Sharapova defeated Li Na in the final, 4–6, 6–4, 7–6(7–5) to win the women's singles tennis title at the 2012 Italian Open. She came back from a set and a double break deficit in the second set of the final, and saved a championship point in the third set.
Maria Sharapova defeated Caroline Wozniacki in the final, 6–2, 6–2 to win the women's singles tennis title at the 2013 Indian Wells Masters. It was her second Indian Wells Masters title, and she did not drop a set during the tournament.
Serena Williams defeated Maria Sharapova in the final, 4–6, 6–3, 6–0 to win the women's singles tennis title at the 2013 Miami Open. It was her record sixth Miami Open title, and Sharapova's fifth runner-up finish without winning the title.
Lindsay Davenport defeated Anastasia Myskina in the final, 6–1, 6–1 to win the singles tennis title at the 2004 Southern California Open.
Maria Sharapova was the defending champion, but withdrew before her first match due to a wrist injury.
Serena Williams was the defending champion, but lost in the second round to Sun Tiantian. Tiantian became the first ever player ranked outside the top 100 to defeat Williams in a main draw match.
Maria Sharapova defeated Aryna Sabalenka in the final, 7–5, 7–6(10–8) to win the singles tennis title at the 2017 Tianjin Open. It was Sharapova's first title since serving a suspension for a doping offense, and her final career title before retiring in 2020.
Alicia Molik defeated Maria Sharapova in the final, 4–6, 6–2, 6–3 to win the singles tennis title at the 2004 Swisscom Challenge.