# 2004 BA-CA-TennisTrophy – Singles

Roger Federer was the defending champion, but did not participate this year.
Feliciano López won the title, defeating Guillermo Cañas 6–4, 1–6, 7–5, 3–6, 7–5 in the final.

## Seeds

* David Nalbandian (quarterfinals)
* Nicolás Massú (quarterfinals)
* Rainer Schüttler (quarterfinals)
* Juan Ignacio Chela (first round)
* Paradorn Srichaphan (second round)
* Guillermo Cañas (final)
* Jiří Novák (withdrew because of a rib injury)
* Feliciano López (champion)

## 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

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final | Final |
| 6 | Guillermo Cañas | 6 | 6 | | | | | | | |
| | Tommy Haas | 4 | 3 | | | | | | | |
| | Tommy Haas | 4 | 3 | 6 | Guillermo Cañas | 4 | 6 | 5 | 6 | 5 |
| | | | | 8 | Feliciano López | 6 | 1 | 7 | 3 | 7 |
| 8 | Feliciano López | 6 | 6 | 8 | Feliciano López | 6 | 1 | 7 | 3 | 7 |
| | Davide Sanguinetti | 3 | 3 | | | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | D Nalbandian | 6 | 6 | | | | | | | | | | | | | | |
| Q | A Seppi | 4 | 3 | | 1 | D Nalbandian | 6 | 7$^8$ | | | | | | | | | |
| | S Koubek | 7 | 6 | | | S Koubek | 2 | 6$^6$ | | | | | | | | | |
| | A Martín | 5 | 1 | | | | | | 1 | D Nalbandian | 4 | 6 | 3 | | | | |
| | T Dent | 6 | 6 | | | | | | 6 | G Cañas | 6 | 2 | 6 | | | | |
| WC | K Gruber | 1 | 3 | | | T Dent | 4 | 4 | | | | | | | | | |
| WC | J Knowle | 2 | 4 | | 6 | G Cañas | 6 | 6 | | | | | | | | | |
| 6 | G Cañas | 6 | 6 | | | | | | | | | | | 6 | G Cañas | 6 | 6 |
| 4 | JI Chela | 4 | 4 | | | | | | | | | | | | T Haas | 4 | 3 |
| | F Mayer | 6 | 6 | | | F Mayer | 3 | 4 | | | | | | | | | |
| Q | W Moodie | 3 | 0 | | | T Haas | 6 | 6 | | | | | | | | | |
| | T Haas | 6 | 6 | | | | | | | T Haas | 4 | 6 | 6 | | | | |
| | R Ginepri | 4 | 7$^7$ | 6 | | | | | | R Ginepri | 6 | 3 | 4 | | | | |
| | P Starace | 6 | 6$^4$ | 4 | | R Ginepri | 6 | 6 | | | | | | | | | |
| | A Costa | 4 | 4 | | 5 | P Srichaphan | 2 | 1 | | | | | | | | | |
| 5 | P Srichaphan | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | F López | 1 | 7 | 6 | | | | | | | | | | | | | |
| | A Calleri | 6 | 5 | 3 | 8 | F López | 6 | 6 | | | | | | | | | |
| | T Enqvist | 6 | 4 | 4 | SE | B Ulihrach | 1 | 4 | | | | | | | | | |
| SE | B Ulihrach | 3 | 6 | 6 | | | | | | 8 | F López | 6 | 6 | | | | |
| | L Horna | 6 | 6 | | | | | | | 3 | R Schüttler | 4 | 4 | | | | |
| | D Ferrer | 3 | 2 | | | L Horna | 5 | 6 | 3 | | | | | | | | |
| | J Melzer | 4 | 6 | 3 | 3 | R Schüttler | 7 | 4 | 6 | | | | | | | | |
| 3 | R Schüttler | 6 | 1 | 6 | | | | | | | | | | 8 | F López | 6 | 6 |
| LL | G Weiner | 3 | 6 | 2 | | | | | | | | | | | D Sanguinetti | 3 | 3 |
| WC | A Peya | 6 | 3 | 6 | WC | A Peya | 5 | 4 | | | | | | | | | |
| | D Sanguinetti | 7$^9$ | 7 | | | D Sanguinetti | 7 | 6 | | | | | | | | | |
| | M Zabaleta | 6$^7$ | 5 | | | | | | | | D Sanguinetti | 6 | 6 | | | | |
| Q | R de Voest | 6 | 6 | | | | | | | 2 | N Massú | 4 | 3 | | | | |
| | J Tipsarević | 3 | 4 | | Q | R de Voest | 4 | 2 | | | | | | | | | |
| Q | K Kučera | 4 | 7$^7$ | 4 | 2 | N Massú | 6 | 6 | | | | | | | | | |
| 2 | N Massú | 6 | 6$^5$ | 6 | | | | | | | | | | | | | |