 Roger Federer | def. |  Albert Costa | 7-5, 6-2, 6-4 |
 Marcos Baghdatis | def. |  Olivier Mutis | 2-6, 6-2, 6-1, 7-5 |
 Dmitry Tursunov | def. |  Mariano Zabaleta | 4-6, 6-3, 6-7 (5), 6-3, 6-2 |
| Fabrice Santoro | def. |  Todd Martin | 4-6, 6-4, 6-4, 7-5 |
 Hyung-Taik Lee | def. |  Ivan Ljubicic | 3-6, 6-3, 1-1, abandon |
| Alberto Martín Magret | def. | Anthony Dupuis | 3-6, 6-2, 6-4, 6-4 |
| Fernando Verdasco | def. | Igor Andreev | 6-3, 6-4, 4-6, 2-6, 7-5 |
 Andrei Pavel | def. |  Jarkko Nieminen | 6-3, 7-5, 6-7 (5), 6-3 |
 Nicolas Massu | def. | José Acasuso | 6-4, 6-0, 6-2 |
 Sargis Sargsian | def. | Alex Corretja | 2-6, 6-4, 6-0, 6-1 |
| Paul-Henri Mathieu | def. |  Raemon Sluiter | 6-2, 7-6, (3) 7-6 (12) |
| Taylor Dent | def. |  Younes El Aynaoui | 6-1, 2-1, abandon |
 Jirí Novák | def. | Radek Stepánek | 7-5, 6-1, 6-3 |
| Alex Calatrava | def. |  Alex Bogdanovic | 6-3, 3-6, 4-6, 6-1, 6-4 |
 Florian Mayer | def. |  Flavio Saretta | 6-4, 6-2, 6-1 |
| Andre Agassi | def. | Robby Ginepri | 7-6 (5), 6-4, 6-2 |
| Carlos Moyá | def. | Brian Baker | 6-7 (6), 6-4, 6-4, 6-2 |
 Amer Delic | def. |  Janko Tipsarevic | 6-1, 6-3, 6-4 |
 Potito Starace | def. | Alexander Popp | 1-6, 6-3, 6-4, 6-3 |
 Olivier Rochus | def. | Mario Ancic | 7-5, 6-2, 7-6 (6) |
 Dominik Hrbaty | def. | Óscar Hernández | 6-1, 6-2, 6-1 |
| Karol Kucera | def. | Xavier Malisse | 6-1, 1-6, 1-6, 6-4, 6-1 |
| Paul Goldstein | def. |  Takao Suzuki | 7-6 (5), 2-6, 6-2, 6-1 |
 Paradorn Srichaphan | def. | Victor Hanescu | 4-6, 6-4, 6-1, 6-1 |
| Gaston Gaudio | def. | Juan Monaco | 7-6 (6), 4-6, 6-3, 6-2 |
 Thomas Johansson | def. | Daniel Elsner | 7-6 (3), 6-4, 6-3 |
| Cyril Saulnier | def. | Greg Rusedski | 6-4, 3-6, 6-1, 3-6, 7-6 (7) |
| Nicolas Kiefer | def. | Nicolas Mahut | 6-3, 7-5, 6-2 |
| Mardy Fish | def. | David Ferrer | 7-5, 6-3, 6-2 |
| Michal Tabara | def. |  Max Mirnyi | 6-4, 3-6, 6-4, 6-4 |
| Jérôme Golmard | def. |  Irakli Labadze | 7-6 (2), abandon |
| Tim Henman | def. | Ivo Karlovic | 7-6 (3), 6-7 (7), 4-6, 6-4, 6-4 |
| David Nalbandian | def. | Dennis Van Scheppingen | 6-4, 7-6 (5), 6-3 |
| Mikhail Youzhny | def. | Albert Montañés | 6-1, 6-3, 6-2 |
| Tuomas Ketola | def. | Jeff Morrison | 6-1, 3-6, 6-3, 7-6 (8) |
| Tomás Berdych | def. | Jonas Björkman | 6-3, 2-6, 6-2, 1-6, 6-3 |
| Ricardo Mello | def. | Juan Ignacio Chela | 6-2, 7-6 (1), 2-6, 2-6, 6-2 |
| David Sánchez | def. | Wayne Odesnik | 4-6, 7-6 (7), 6-2, 6-3 |
| Tommy Haas | def. | Davide Sanguinetti | 6-1, 5-7, 6-2, 3-6, 6-2 |
| Sébastien Grosjean | def. | Olivier Patience | 7-5, 6-7 (8), 6-2, 6-1 |
| Robin Söderling | def. | Fernando González | 6-4, 7-6 (3), 6-7 (4), 6-1 |
| Nikolay Davydenko | def. |  Mark Philippoussis | 1-6, 6-3, 3-6, 7-6 (5), 4-1 ab. |
| Karol Beck | def. | Thierry Ascione | 6-3, 7-6 (4), 6-4 |
 Kristian Pless | def. | Gustavo Kuerten | 6-4, 3-6, 6-1, 7-6 (4) |
| Feliciano López | def. | Arnaud Di Pasquale | 7-6 (4), 6-3, 6-2 |
| Philipp Kohlschreiber | def. | Julien Benneteau | 6-1, 6-1, 6-4 |
| Hicham Arazi | def. | Kenneth Carlsen | 6-4, 7-6 (5), 6-7 (0), 3-6, 6-3 |
| Lleyton Hewitt | def. |  Wayne Ferreira | 6-1, 7-5, 6-4 |
| Juan Carlos Ferrero | def. | Tomas Zib | 4-6, 7-5, 7-6 (6), 6-7 (4), 6-3 |
 Stefan Koubek | def. | Alex Bogomolov Jr. | 6-3, 6-4, 1-6, 2-6, 6-3 |
| Jan-Michael Gambill | def. | Rajeev Ram | 6-3, 6-2, 3-6, 6-4 |
| Joachim Johansson | def. |  Yen-Hsun Lu | 6-3, 6-1, 6-3 |
| Vincent Spadea | def. |  Luis Horna | 6-7 (3), 6-2, 6-4, 6-4 |
| Jürgen Melzer | def. | Gregory Carraz | 7-5, 6-0, 4-6, 6-3 |
| Michaël Llodra | def. | Gilles Elseneer | 2-6, 7-6 (2), 7-6 (5), 6-2 |
| Andreas Seppi | def. | Rainer Schüttler | 3-6, 4-6, 7-6 (5), 7-6 (1), 6-1 |
| Thomas Enqvist | def. | Marat Safin | 7-6 (5), 6-4, 3-6, 6-3 |
| Alexander Peya | def. | Bobby Reynolds | 2-6, 6-3, 6-3, 6-7 (3), 6-4 |
| Arnaud Clément | def. | Wayne Arthurs | 6-4, 6-7 (5), 6-3, 6-3 |
| Tommy Robredo | def. | Danai Udomchoke | 6-4, 7-5, 6-4 |
| Guillermo Cañas | def. | Kristof Vliegen | 6-3, 4-6, 7-5, 6-1 |
| Filippo Volandri | def. | K.J. Hippensteel | 6-3, 6-4, 6-2 |
| Rafael Nadal | def. | Ivo Heuberger | 6-0, 6-3, 4-6, 2-6, 6-3 |
| Andy Roddick | def. | Scoville Jenkins | 6-0, 6-2, 6-2 |
