# 1999 Campionati Internazionali di Sicilia – Singles

Mariano Puerta was the defending champion, but lost in the second round to Albert Costa.
Arnaud Di Pasquale won the title by defeating Alberto Berasategui 6–1, 6–3 in the final.

## Seeds

* Àlex Corretja (quarterfinals)
* Albert Costa (semifinals, retired)
* Fernando Meligeni (first round)
* Younes El Aynaoui (second round)
* Mariano Zabaleta (first round)
* Fernando Vicente (second round)
* Franco Squillari (first round, retired)
* Juan Carlos Ferrero (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 |
| | Arnaud Di Pasquale | 7$^8$ | 7 | | | | |
| | Karim Alami | 6$^6$ | 5 | | | | |
| | Karim Alami | 6$^6$ | 5 | | Arnaud Di Pasquale | 6 | 6 |
| | | | | | Alberto Berasategui | 1 | 3 |
| | Alberto Berasategui | 2 | 7$^7$ | 4 | Alberto Berasategui | 1 | 3 |
| 2 | Albert Costa | 6 | 6$^3$ | 0$^r$ | | | |

### 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 |
| 1 | À Corretja | 6 | 7 | | | | | | | | | | | | | | |
| Q | J Díaz | 1 | 5 | | 1 | À Corretja | 7$^7$ | 6 | | | | | | | | | |
| | JA Marín | 7 | 6 | | | JA Marín | 6$^4$ | 2 | | | | | | | | | |
| | A Portas | 5 | 1 | | | | | | | 1 | À Corretja | 4 | 6$^4$ | | | | |
| Q | E Nicolás | 3 | 0 | | | | | | | | A Di Pasquale | 6 | 7$^7$ | | | | |
| | J Knippschild | 6 | 6 | | | J Knippschild | 4 | 6 | 2 | | | | | | | | |
| | A Di Pasquale | 6 | 4 | | | A Di Pasquale | 6 | 4 | 6 | | | | | | | | |
| 7 | F Squillari | 4 | 1$^r$ | | | | | | | | | | | | A Di Pasquale | 7$^8$ | 7 |
| 4 | Y El Aynaoui | 6$^5$ | 6 | 6 | | | | | | | | | | | K Alami | 6$^6$ | 5 |
| WC | J Alonso | 7$^7$ | 2 | 2 | 4 | Y El Aynaoui | 4 | 6 | 3 | | | | | | | | |
| Q | JA Viloca | 4 | 2 | | | K Alami | 6 | 3 | 6 | | | | | | | | |
| | K Alami | 6 | 6 | | | | | | | | K Alami | 4 | 6 | 6 | | | |
| | M Hipfl | 6 | 7$^7$ | | | | | | | | M Hipfl | 6 | 4 | 4 | | | |
| Q | D Sánchez | 2 | 6$^5$ | | | M Hipfl | 6 | 6 | | | | | | | | | |
| WC | D Sanguinetti | 6 | 7$^7$ | | WC | D Sanguinetti | 4 | 2 | | | | | | | | | |
| 5 | M Zabaleta | 4 | 6$^2$ | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 6 | F Vicente | 6 | 6 | | | | | | | | | | | | | | | |
| | A Gaudenzi | 4 | 2 | | 6 | F Vicente | 6 | 6$^7$ | 5 | | | | | | | | | |
| | A Berasategui | 2 | 6 | 6 | | A Berasategui | 4 | 7$^9$ | 7 | | | | | | | | | |
| | M Rodríguez | 6 | 2 | 1 | | | | | | | A Berasategui | 6 | 6 | | | | | |
| | G Cañas | 0 | 4 | | | | | | | | H Gumy | 3 | 4 | | | | | |
| | G Gaudio | 6 | 6 | | | G Gaudio | 0 | 1 | | | | | | | | | | |
| | H Gumy | 1 | 6 | 0 | | H Gumy | 6 | 6 | | | | | | | | | | |
| 3 | F Meligeni | 6 | 3 | 3$^r$ | | | | | | | | | | | A Berasategui | 2 | 7$^7$ | 4 |
| 8 | JC Ferrero | 6$^1$ | 6 | 7 | | | | | | | | | | 2 | A Costa | 6 | 6$^3$ | 0$^r$ |
| | S Sargsian | 7$^7$ | 0 | 5 | 8 | JC Ferrero | 3 | 2 | | | | | | | | | | |
| WC | D Nargiso | 1 | 4 | | | A Martín | 6 | 6 | | | | | | | | | | |
| | A Martín | 6 | 6 | | | | | | | | A Martín | 6$^4$ | 3 | | | | | |
| | M Puerta | 6 | 6 | | | | | | | 2 | A Costa | 7$^7$ | 6 | | | | | |
| | G Blanco | 4 | 3 | | | M Puerta | 2 | 6 | 4 | | | | | | | | | |
| | M Filippini | 1 | 1 | | 2 | A Costa | 6 | 3 | 6 | | | | | | | | | |
| 2 | A Costa | 6 | 6 | | | | | | | | | | | | | | | |