| Women's singles | |
|---|---|
| 2003 Abierto Mexicano Telefonica Movistar | |
| Champion |  Amanda Coetzer |
| Runner-up |  Mariana Díaz Oliva |
| Score | 7–5, 6–3 |
Katarina Srebotnik was the defending champion, but lost in second round to Petra Mandula. [1]
Amanda Coetzer won the title by defeating Mariana Díaz Oliva 7–5, 6–3 in the final. [2] It was the 9th and last title for Coetzer in her career.
The first two seeds received a bye into the second round.
Elena Dementieva (second round) Amanda Coetzer (champion) Paola Suárez (first round, retired due to a back injury) [3] 
Katarina Srebotnik (second round)
Magüi Serna (first round) Tina Pisnik (first round)
Émilie Loit (semifinals)
Emmanuelle Gagliardi (second round)| Semifinals | Final | ||||||||||||
 Shinobu Asagoe | 1 | 77 | 1 | ||||||||||
| Mariana Díaz Oliva | 6 | 65 | 6 | ||||||||||
| Mariana Díaz Oliva | 5 | 3 | |||||||||||
| 2 | Amanda Coetzer | 7 | 6 | ||||||||||
| 7 | Émilie Loit | 3 | 4 | ||||||||||
| 2 | Amanda Coetzer | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | E Dementieva | 7 | 3 | 3 | |||||||||||||||||||||||
| S Asagoe | 64 | 6 | 77 | S Asagoe | 5 | 6 | 6 | ||||||||||||||||||||
 A Serra Zanetti | 77 | 2 | 61 | S Asagoe | 6 | 5 | 7 | ||||||||||||||||||||
| C Torrens Valero | 77 | 4 | 6 | C Torrens Valero | 4 | 7 | 5 | ||||||||||||||||||||
 R de los Ríos | 63 | 6 | 2 | C Torrens Valero | 78 | 710 | |||||||||||||||||||||
| WC | ME Salerni | 7 | 1 | 4 | 8 | E Gagliardi | 66 | 68 | |||||||||||||||||||
| 8 | E Gagliardi | 5 | 6 | 6 | S Asagoe | 1 | 77 | 1 | |||||||||||||||||||
| 3 | P Suárez | 2r | M Díaz Oliva | 6 | 65 | 6 | |||||||||||||||||||||
| M Díaz Oliva | 5 | M Díaz Oliva | 6 | 6 | |||||||||||||||||||||||
 M Müller | 1 | 6 | 6 | M Müller | 1 | 2 | |||||||||||||||||||||
 Å Svensson | 6 | 2 | 4 | M Díaz Oliva | 6 | 4 | 77 | ||||||||||||||||||||
| PR | A Medina Garrigues | 6 | 6 | Q |  A Vašková | 3 | 6 | 65 | |||||||||||||||||||
| A Roesch | 4 | 1 | PR | A Medina Garrigues | 5 | 66 | |||||||||||||||||||||
| Q | A Vašková | 6 | 6 | Q | A Vašková | 7 | 78 | ||||||||||||||||||||
| 5 | M Serna | 3 | 2 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | É Loit | 6 | 6 | ||||||||||||||||||||||||
| PR | J Kruger | 3 | 0 | 7 | É Loit | 4 | 6 | 6 | |||||||||||||||||||
| Q |  M Sequera | 1 | 2 | M Marrero | 6 | 3 | 3 | ||||||||||||||||||||
| M Marrero | 6 | 6 | 7 | É Loit | 3 | 6 | 6 | ||||||||||||||||||||
| Q |  I Abramović | 3 | 62 |  P Mandula | 6 | 2 | 1 | ||||||||||||||||||||
| P Mandula | 6 | 77 | P Mandula | 6 | 6 | ||||||||||||||||||||||
 F Zuluaga | 4 | 64 | 4 | K Srebotnik | 4 | 2 | |||||||||||||||||||||
| 4 | K Srebotnik | 6 | 77 | 7 | É Loit | 3 | 4 | ||||||||||||||||||||
| 6 | T Pisnik | 6 | 4 | 3 | 2 | A Coetzer | 6 | 6 | |||||||||||||||||||
 P Wartusch | 3 | 6 | 6 | P Wartusch | 4 | 6 | 4 | ||||||||||||||||||||
| Q | P García | 3 | 2 |  F Pennetta | 6 | 2 | 6 | ||||||||||||||||||||
| F Pennetta | 6 | 6 | F Pennetta | 6 | 2 | 3 | |||||||||||||||||||||
| K Koukalová | 6 | 6 | 2 | A Coetzer | 4 | 6 | 6 | ||||||||||||||||||||
| WC |  M Torres Sandoval | 0 | 2 | K Koukalová | 4 | 6 | 5 | ||||||||||||||||||||
| 2 | A Coetzer | 6 | 3 | 7 | |||||||||||||||||||||||
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 en route to the title, against Kim Clijsters in the semifinals.
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.
Kim Clijsters defeated Lindsay Davenport in the final, 6–4, 7–5 to win the women's singles tennis title at the 2003 Indian Wells Masters.
Anne Kremer was the defending champion but lost in the quarterfinals to Marlene Weingärtner.
Serena and Venus Williams defeated Virginia Ruano Pascual and Paola Suárez in the final, 6–2, 7–5 to win the ladies' doubles tennis title at the 2002 Wimbledon Championships. It was their second Wimbledon doubles title together and sixth major title together overall.
Serena Williams and Venus Williams were the defending champions, but Serena withdrew from the tournament and Venus chose not to participate with another player.
Martina Hingis and Anna Kournikova defeated Daniela Hantuchová and Arantxa Sánchez Vicario 6–2, 6–7(4–7), 6–1 in the final to win the title.
The 2003 Abierto Mexicano Telefonica Movistar was a tennis tournament played on outdoor clay courts at the Fairmont Acapulco Princess in Acapulco in Mexico that was part of the International Series Gold of the 2003 ATP Tour and of Tier III of the 2003 WTA Tour. The tournament was held from February 24 through March 2, 2003.
Amanda Coetzer won in the final 2–6, 6–1, 6–2 against Elena Dementieva.
María José Martínez and Anabel Medina Garrigues won in the final 6–4, 6–7(5–7), 7–5 against Virginia Ruano Pascual and Paola Suárez.
Serena and Venus Williams were the defending champions but withdrew in the third round.
Martina Hingis and Mary Pierce were the defending champions, but neither participated in this tournament.
Els Callens and Meghann Shaughnessy were the defending champions, but chose to play on separate teams for this year. Callens played alongside Chanda Rubin and were eliminated in the quarterfinals, while Shaughnessy teamed up with Magdalena Maleeva and lost in the second round.
Leoš Friedl and Daniela Hantuchová were the defending champions but decided not to play together. Friedl played with Tina Križan and lost in first round to Mike Bryan and Liezel Huber, while Hantuchová competed with Kevin Ullyett.
Lisa Raymond and Rennae Stubbs were the defending champions, but lost in third round to Kim Clijsters and Meghann Shaughnessy.
Martina Hingis and Anna Kournikova were the defending champions, but competed this year with different partners. Hingis partnered with Mary Pierce and finished the tournament as runners-up, while Kournikova teamed up with Barbara Schett and lost in semifinals to Lisa Raymond and Rennae Stubbs.
Virginia Ruano Pascual and Paola Suárez were the defending champions and successfully defended their title, defeating Lisa Raymond and Rennae Stubbs 6–4, 6–2 in the final.
Amanda Coetzer and Lori McNeil were the defending champions, but none competed this year.
Cara Black and Elena Likhovtseva were the defending champions, but lost in semifinals to Conchita Martínez and Patricia Tarabini.
Paola Suárez was the defending champion, but lost in quarterfinals to eventual tournament winner Fabiola Zuluaga.
Amanda Coetzer was the defending champion, but lost in quarterfinals to Paola Suárez.
Díaz Oliva (26) who won the title in Palermo in 2002, said that never expected reaching the final "I thought that the first round match would be tough and my opponent (Paola Suárez) retired due to a back injury, and that's how the chance opened for me."