# 2004 Western & Southern Financial Group Masters – Singles

Andre Agassi defeated Lleyton Hewitt in the final, 6–3, 3–6, 6–2 to win the men's singles tennis title at the 2004 Cincinnati Masters.
Andy Roddick was the defending champion, but lost in the semifinals to Agassi.

## Seeds

* Roger Federer (first round)
* Andy Roddick (semifinals)
* Guillermo Coria (withdrew due to a right shoulder injury)
* Carlos Moyà (quarterfinals)
* Tim Henman (third round)
* David Nalbandian (withdrew due to an elbow injury)
* Juan Carlos Ferrero (second round)
* Rainer Schüttler (first round)
* Gastón Gaudio (second round)
* Lleyton Hewitt (final)
* Andre Agassi (champion)
* Sébastien Grosjean (first round)
* Nicolás Massú (first round)
* Marat Safin (quarterfinals)
* Paradorn Srichaphan (third round)
* Andrei Pavel (first round)
* Juan Ignacio Chela (third round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| | Fabrice Santoro | 2 | 3 | | | | | | | | | | |
| | Tommy Robredo | 6 | 6 | | | | | | | | | | |
| | Tommy Robredo | 6 | 6 | | Tommy Robredo | 3 | 2 | | | | | | |
| | | | | 10 | Lleyton Hewitt | 6 | 6 | | | | | | |
| 14 | Marat Safin | 4 | 4 | 10 | Lleyton Hewitt | 6 | 6 | | | | | | |
| 10 | Lleyton Hewitt | 6 | 6 | | | | | | | | | | |
| 10 | Lleyton Hewitt | 6 | 6 | | | | | | 10 | Lleyton Hewitt | 3 | 6 | 2 |
| | | | | | | | | | 11 | Andre Agassi | 6 | 3 | 6 |
| 11 | Andre Agassi | 7$^{14}$ | 6 | | | | | | | | | | | 11 | Andre Agassi | 6 | 3 | 6 |
| 4 | Carlos Moyá | 6$^{12}$ | 3 | | | | | | | | | | |
| 4 | Carlos Moyá | 6$^{12}$ | 3 | 11 | Andre Agassi | 7 | 6$^2$ | 7$^7$ | | | | | |
| | | | | 2 | Andy Roddick | 5 | 7$^7$ | 6$^2$ | | | | | |
| WC | Tommy Haas | 3 | 3 | 2 | Andy Roddick | 5 | 7$^7$ | 6$^2$ | | | | | |
| 2 | Andy Roddick | 6 | 6 | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals |
| 1 | R Federer | 6 | 6$^7$ | 4 | | | | | | | | | | | | |
| | D Hrbatý | 1 | 7$^9$ | 6 | | D Hrbatý | 7$^8$ | 3 | 3 | | | | | | | |
| | J Björkman | 2 | 6 | 6 | | J Björkman | 6$^6$ | 6 | 6 | | | | | | | |
| | I Labadze | 6 | 2 | 1 | | | | | | | J Björkman | 0 | 3 | | | |
| | R Ginepri | 3 | 6$^6$ | | | | | | | | F Santoro | 6 | 6 | | | |
| | F Santoro | 6 | 7$^8$ | | | F Santoro | 7 | 6 | | | | | | | | |
| | M Youzhny | 6 | 3 | 6 | | M Youzhny | 5 | 3 | | | | | | | | |
| 13 | N Massú | 3 | 6 | 3 | | | | | | | | | | F Santoro | 2 | 3 |
| 9 | G Gaudio | 6 | 6 | | | | | | | | | | | T Robredo | 6 | 6 |
| WC | J-M Gambill | 4 | 2 | | 9 | G Gaudio | 6 | 6$^3$ | 4 | | | | | | | |
| | T Enqvist | 6 | 3 | 2 | Q | G Rusedski | 4 | 7$^7$ | 6 | | | | | | | |
| Q | G Rusedski | 3 | 6 | 6 | | | | | | Q | G Rusedski | 6$^4$ | 6$^2$ | | | |
| | T Dent | 6$^4$ | 3 | | | | | | | | T Robredo | 7$^7$ | 7$^7$ | | | |
| | T Robredo | 7$^7$ | 6 | | | T Robredo | 7$^7$ | 4 | 6 | | | | | | | |
| | A Clément | 4 | 4 | | 7 | J C Ferrero | 6$^5$ | 6 | 4 | | | | | | | |
| 7 | J C Ferrero | 6 | 6 | | | | | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| LL | T Reid | 4 | 4 | | | | | | | | | | | | | | | |
| | F López | 6 | 6 | | | F López | 6$^9$ | 4 | | | | | | | | | | |
| Q | W Moodie | 7$^7$ | 6$^7$ | 6$^9$ | Q | I Karlović | 7$^{11}$ | 6 | | | | | | | | | | |
| Q | I Karlović | 6$^2$ | 7$^9$ | 7$^{11}$ | | | | | | Q | I Karlović | 6$^4$ | 7$^7$ | 4 | | | | |
| | J Melzer | 6$^3$ | 2 | | | | | | | 14 | M Safin | 7$^7$ | 6$^3$ | 6 | | | | |
| WC | J Morrison | 7$^7$ | 6 | | WC | J Morrison | 4 | 4 | | | | | | | | | | |
| | J Novák | 3 | 0 | | 14 | M Safin | 6 | 6 | | | | | | | | | | |
| 14 | M Safin | 6 | 6 | | | | | | | | | | | | 14 | M Safin | 4 | 4 |
| 10 | L Hewitt | 6 | 6 | | | | | | | | | | | | 10 | L Hewitt | 6 | 6 |
| WC | A Bogomolov Jr. | 2 | 4 | | 10 | L Hewitt | 6 | 6 | | | | | | | | | | |
| | Y-H Lu | 4 | 6 | 3 | | G Kuerten | 3 | 4 | | | | | | | | | | |
| | G Kuerten | 6 | 3 | 6 | | | | | | 10 | L Hewitt | 6 | 6 | | | | | |
| | H Arazi | 6$^3$ | 7 | 5 | | | | | | 5 | T Henman | 1 | 4 | | | | | |
| | V Spadea | 7$^7$ | 5 | 3$^r$ | | H Arazi | 6 | 3 | 5 | | | | | | | | | |
| | Y El Aynaoui | 1 | 0 | | 5 | T Henman | 4 | 6 | 7 | | | | | | | | | |
| 5 | T Henman | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 17 | J I Chela | 6 | 4 | 7$^7$ | | | | | | | | | | | | | | |
| | R Nadal | 4 | 6 | 6$^3$ | 17 | J I Chela | 2 | 6 | 6 | | | | | | | | | |
| | F González | 6 | 6 | | | F González | 6 | 3 | 2 | | | | | | | | | |
| Q | D Tursunov | 4 | 4 | | | | | | | 17 | J I Chela | 3 | 3 | | | | | |
| SE | T Johansson | 7$^7$ | 7$^7$ | | | | | | | 11 | A Agassi | 6 | 6 | | | | | |
| LL | G Carraz | 6$^3$ | 6$^3$ | | SE | T Johansson | 1 | 6 | 1 | | | | | | | | | |
| | M Fish | 6 | 6$^3$ | 1 | 11 | A Agassi | 6 | 3 | 6 | | | | | | | | | |
| 11 | A Agassi | 4 | 7$^7$ | 6 | | | | | | | | | | | 11 | A Agassi | 7$^{14}$ | 6 |
| 16 | A Pavel | 6$^5$ | 3 | | | | | | | | | | | | 4 | C Moyà | 6$^{12}$ | 3 |
| LL | W Arthurs | 7$^7$ | 6 | | LL | W Arthurs | 6 | 7$^8$ | | | | | | | | | | |
| | M Llodra | 4 | 6$^1$ | | | M Zabaleta | 2 | 6$^6$ | | | | | | | | | | |
| | M Zabaleta | 6 | 7$^7$ | | | | | | | LL | W Arthurs | 6$^5$ | 6 | 6$^5$ | | | | |
| | X Malisse | 6 | 6$^5$ | 6$^5$ | | | | | | 4 | C Moyà | 7$^7$ | 4 | 7$^7$ | | | | |
| | I Ljubičić | 4 | 7$^7$ | 7$^7$ | | I Ljubičić | 4 | 6 | 4 | | | | | | | | | |
| Q | A Parmar | 6 | 5 | 2 | 4 | C Moyà | 6 | 4 | 6 | | | | | | | | | |
| 4 | C Moyà | 3 | 7 | 6 | | | | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 8 | R Schüttler | 3 | 6 | 4 | | | | | | | | | | | | | |
| WC | T Haas | 6 | 1 | 6 | WC | T Haas | 6 | 6 | | | | | | | | | |
| | S Sargsian | 2 | 6 | 7 | | S Sargsian | 3 | 3 | | | | | | | | | |
| Q | M Kratochvil | 6 | 2 | 5 | | | | | WC | T Haas | 6 | 5 | 6 | | | | |
| | L Horna | 7$^7$ | 7$^7$ | | | | | | | R Söderling | 3 | 7 | 4 | | | | |
| | F Verdasco | 6$^4$ | 6$^3$ | | | L Horna | 2 | 3 | | | | | | | | | |
| | R Söderling | 3 | 6 | 6 | | R Söderling | 6 | 6 | | | | | | | | | |
| 12 | S Grosjean | 6 | 3 | 4 | | | | | | | | | | WC | T Haas | 3 | 3 |
| 15 | P Srichaphan | 6 | 5 | 6 | | | | | | | | | | 2 | A Roddick | 6 | 6 |
| | D Ferrer | 3 | 7 | 3 | 15 | P Srichaphan | 6 | 6 | | | | | | | | | |
| Q | D Norman | 4 | 3 | | | S Schalken | 3 | 4 | | | | | | | | | |
| | S Schalken | 6 | 6 | | | | | | 15 | P Srichaphan | 2 | 3 | | | | | |
| | J Johansson | 3 | 6$^2$ | | | | | | 2 | A Roddick | 6 | 6 | | | | | |
| | N Kiefer | 6 | 7$^7$ | | | N Kiefer | 4 | 4 | | | | | | | | | |
| | M Mirnyi | 7$^7$ | 6$^5$ | 3 | 2 | A Roddick | 6 | 6 | | | | | | | | | |
| 2 | A Roddick | 6$^5$ | 7$^7$ | 6 | | | | | | | | | | | | | |