# 2003 BellSouth Open – Singles

Fernando González was the defending champion but did not compete that year.
David Sánchez won in the final 1–6, 6–3, 6–3 against Marcelo Ríos.

## Seeds

* Gastón Gaudio (semifinals)
* Nicolás Lapentti (withdrew because of a back injury)
* Marcelo Ríos (final)
* José Acasuso (second round)
* Agustín Calleri (quarterfinals)
* Fernando Vicente (second round)
* Félix Mantilla (quarterfinals)
* David Ferrer (second 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

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Gastón Gaudio | 3 | 2 | | | | | | |
| 3 | Marcelo Ríos | 6 | 6 | | | | | | |
| 3 | Marcelo Ríos | 6 | 6 | | 3 | Marcelo Ríos | 6 | 3 | 3 |
| | | | | | | David Sánchez | 1 | 6 | 6 |
| | David Sánchez | 7$^7$ | 3 | 6 | | David Sánchez | 1 | 6 | 6 |
| | Albert Montañés | 6$^4$ | 6 | 1 | | | | | |

### Top 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | G Gaudio | 6 | 2 | 6 | | | | | | | | | | | | | | |
| | N Massú | 0 | 6 | 1 | 1 | G Gaudio | 6 | 6 | | | | | | | | | | |
| WC | H Gamonal | 7 | 5 | 6 | WC | H Gamonal | 3 | 4 | | | | | | | | | | |
| | J Díaz | 5 | 7 | 3 | | | | | | 1 | G Gaudio | 6 | 3 | 6 | | | | |
| Q | M Daniel | 7 | 6 | | | | | | | 7 | F Mantilla | 2 | 6 | 3 | | | | |
| | F Meligeni | 5 | 4 | | Q | M Daniel | 2 | 3 | | | | | | | | | | |
| | A Martín | 5 | 4 | | 7 | F Mantilla | 6 | 6 | | | | | | | | | | |
| 7 | F Mantilla | 7 | 6 | | | | | | | | | | | | 1 | G Gaudio | 3 | 2 |
| 3 | M Ríos | 6 | 6 | | | | | | | | | | | | 3 | M Ríos | 6 | 6 |
| WC | A García | 3 | 2 | | 3 | M Ríos | 6 | 7$^7$ | | | | | | | | | | |
| | A Portas | 7 | 1 | 7 | | A Portas | 4 | 6$^3$ | | | | | | | | | | |
| Q | F Čermák | 5 | 6 | 5 | | | | | | 3 | M Ríos | 6 | 7$^7$ | | | | | |
| | M Puerta | 6 | 6 | | | | | | | 5 | A Calleri | 4 | 6$^2$ | | | | | |
| | F Saretta | 3 | 0 | | | M Puerta | 6 | 2 | 2 | | | | | | | | | |
| | C Mamiit | 6 | 3 | 4 | 5 | A Calleri | 3 | 6 | 6 | | | | | | | | | |
| 5 | A Calleri | 0 | 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 | D Ferrer | 6 | 6 | | | | | | | | | | | | | | |
| | A Kim | 2 | 3 | | 8 | D Ferrer | 7 | 4 | 0 | | | | | | | | |
| | A Gaudenzi | 4 | 6 | 6 | | A Gaudenzi | 5 | 6 | 6 | | | | | | | | |
| | M Hipfl | 6 | 3 | 0 | | | | | | A Gaudenzi | 7$^7$ | 1 | 3 | | | | |
| Q | S Prieto | 4 | 5 | | | | | | | D Sánchez | 6$^2$ | 6 | 6 | | | | |
| | D Sánchez | 6 | 7 | | | D Sánchez | 4 | 6 | 6 | | | | | | | | |
| | L Horna | 4 | 3 | | 4 | J Acasuso | 6 | 0 | 1 | | | | | | | | |
| 4 | J Acasuso | 6 | 6 | | | | | | | | | | | D Sánchez | 7$^7$ | 3 | 6 |
| 6 | F Vicente | 3 | 6 | 6 | | | | | | | | | | A Montañés | 6$^4$ | 6 | 1 |
| Q | Ó Serrano | 6 | 2 | 4 | 6 | F Vicente | 7$^7$ | 1 | 2 | | | | | | | | |
| WC | J Peralta | 5 | 4 | | | A Montañés | 6$^3$ | 6 | 6 | | | | | | | | |
| | A Montañés | 7 | 6 | | | | | | | A Montañés | 6 | 6 | | | | | |
| | A Sávolt | 6$^8$ | 3 | | | | | | | J Vaněk | 0 | 4 | | | | | |
| | J Vaněk | 7$^{10}$ | 6 | | | J Vaněk | 7$^7$ | 7$^7$ | | | | | | | | | |
| | F Squillari | 7 | 4 | 6 | | F Squillari | 6$^2$ | 6$^5$ | | | | | | | | | |
| LL | R Ramírez Hidalgo | 5 | 6 | 2 | | | | | | | | | | | | | |