| Tournament | Surface | Week | Winner | Runner-up | Semifinalists | Quarterfinalists |
| Indian Wells |
Hard |
March 7 |
 Roger Federer (1)
6–2, 6–4, 6–4 |
 Lleyton Hewitt (2) |
 Guillermo Cañas (14)
 Andy Roddick (3) |
 Nicolas Kiefer (29)
 Tim Henman (6)
 Carlos Moyá (7)
Andre Agassi (9) |
| Miami |
Hard |
March 21 |
Roger Federer (1)
2–6, 6–7(4), 7–6(5), 6–3, 6–1 |
Rafael Nadal (29) |
Andre Agassi (9)
David Ferrer |
Tim Henman (6)
Taylor Dent (31)
 Dominik Hrbatý (26)
 Thomas Johansson (25) |
| Monte Carlo |
Clay |
April 11 |
Rafael Nadal (11)
6–3, 6–1, 0–6, 7–5 |
Guillermo Coria (6) |
 Richard Gasquet (Q)
Juan Carlos Ferrero (WC) |
Roger Federer (1)
Gastón Gaudio (4)
David Ferrer
 Filippo Volandri |
| Rome |
Clay |
May 2 |
Rafael Nadal (5)
6–4, 3–6, 6–3, 4–6, 7–6(6) |
Guillermo Coria (9) |
Andre Agassi (6)
David Ferrer |
Fernando Verdasco
Dominik Hrbatý
Alberto Martín (LL)
 Radek Štěpánek (15) |
| Hamburg |
Clay |
May 9 |
Roger Federer (1)
6–3, 7–5, 7–6(4) |
Richard Gasquet (Q) |
 Nikolay Davydenko (15)
.svg.png) Christophe Rochus (Q) |
Guillermo Coria (10)
Filippo Volandri
Juan Ignacio Chela
Andreas Seppi (Q) |
| Montréal |
Hard |
August 8 |
Rafael Nadal (1)
6–3, 4–6, 6–2 |
Andre Agassi (4) |
Paul-Henri Mathieu
Greg Rusedski |
Mariano Puerta (8)
Karol Beck
Gastón Gaudio (6)
Dominik Hrbatý |
| Cincinnati |
Hard |
August 15 |
Roger Federer (1)
6–3, 7–5 |
Andy Roddick (5) |
Robby Ginepri (WC)
Lleyton Hewitt (3) |
José Acasuso
Marat Safin (4)
Nikolay Davydenko (6)
Mikhail Youzhny |
| Madrid |
Hard (i) |
October 17 |
Rafael Nadal (1)
3–6, 2–6, 6–3, 6–4, 7–6(3) |
 Ivan Ljubičić (8) |
Robby Ginepri (16)
David Nalbandian (5) |
Radek Štěpánek (10)
David Ferrer (11)
 Fernando González (15)
Ivo Karlović (Q) |
| Paris |
Carpet (i) |
October 31 |
Tomáš Berdych
6–3, 6–4, 3–6, 4–6, 6–4 |
Ivan Ljubičić (6) |
Andy Roddick (1)
Radek Štěpánek (8) |
David Ferrer (10)
Tommy Robredo (14)
Nikolay Davydenko (3)
Gastón Gaudio (7) |
Shanghai
(TMC) |
Carpet (i) |
November 13 |
David Nalbandian
6–7(4), 6–7(11), 6–2, 6–1, 7–6(3) |
Roger Federer |
Gastón Gaudio
Nikolay Davydenko |
Ivan Ljubičić
Guillermo Coria
Fernando González
Mariano Puerta
Andre Agassi |