# 1990 Sanremo Open – Singles

Seventh-seeded Jordi Arrese defeated Juan Aguilera 6–2, 6–2 in the final to secure the title.

## Seeds

* Guillermo Pérez Roldán (quarterfinals)
* Juan Aguilera (final)
* Goran Prpić (second round)
* Marcelo Filippini (semifinals)
* Ronald Agénor (first round)
* Franco Davín (first round)
* Jordi Arrese (champion)
* Omar Camporese (quarterfinals)

## 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 |
| 7 | Jordi Arrese | 6 | 6 | | | | |
| 4 | Marcelo Filippini | 2 | 3 | | | | |
| 4 | Marcelo Filippini | 2 | 3 | 7 | Jordi Arrese | 6 | 6 |
| | | | | 2 | Juan Aguilera | 2 | 2 |
| | Roberto Azar | 6$^2$ | 2 | 2 | Juan Aguilera | 2 | 2 |
| 2 | Juan Aguilera | 7$^7$ | 6 | | | | |

### Section 1

| 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 |
| 1 | G Pérez Roldán | 5 | 7 | 6 | | | | | | | | | | | | | |
| | F Santoro | 7 | 6 | 2 | 1 | G Pérez Roldán | 0 | 7 | 6 | | | | | | | | |
| | A Rahunen | 6 | 6 | | | A Rahunen | 6 | 5 | 1 | | | | | | | | |
| | O Delaître | 4 | 3 | | | | | | | 1 | G Pérez Roldán | 4 | 2 | | | | |
| Q | D Balducci | 6 | 4 | | | | | | | 7 | J Arrese | 6 | 6 | | | | |
| | S Pescosolido | 7 | 6 | | | S Pescosolido | 7 | 2 | 2 | | | | | | | | |
| | C Pioline | 4 | 2 | | 7 | J Arrese | 5 | 6 | 6 | | | | | | | | |
| 7 | J Arrese | 6 | 6 | | | | | | | | | | | 7 | J Arrese | 6 | 6 |
| 4 | M Filippini | 6 | 2 | 7 | | | | | | | | | | 4 | M Filippini | 2 | 3 |
| | T Champion | 2 | 6 | 6 | 4 | M Filippini | 2 | 6 | 7 | | | | | | | | |
| | T Benhabiles | 1 | 7 | 7 | | T Benhabiles | 6 | 4 | 5 | | | | | | | | |
| | T Tulasne | 6 | 6 | 5 | | | | | | 4 | M Filippini | 6 | 6 | | | | |
| | C Geyer | 5 | 1 | | | | | | | | R Furlan | 1 | 3 | | | | |
| WC | N Utgren | 7 | 6 | | WC | N Utgren | 1 | 3 | | | | | | | | | |
| | R Furlan | 4 | 6 | 7 | | R Furlan | 6 | 6 | | | | | | | | | |
| 5 | R Agénor | 6 | 2 | 6 | | | | | | | | | | | | | |

### Section 2

| 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 |
| 6 | F Davín | 6 | 5 | 3 | | | | | | | | | | | | | |
| WC | C Mezzadri | 1 | 7 | 6 | WC | C Mezzadri | 2 | 6 | 6 | | | | | | | | |
| | J Altur | 6 | 6 | | | J Altur | 6 | 1 | 2 | | | | | | | | |
| Q | S Sansoni | 2 | 0 | | | | | | | WC | C Mezzadri | 6$^6$ | 6$^{10}$ | | | | |
| | C Bergström | 2 | 2 | | | | | | | | R Azar | 7$^8$ | 7$^{12}$ | | | | |
| | R Azar | 6 | 6 | | | R Azar | 7 | 6 | | | | | | | | | |
| WC | F Mordegan | 5 | 2 | | 3 | G Prpić | 5 | 2 | | | | | | | | | |
| 3 | G Prpić | 7 | 6 | | | | | | | | | | | | R Azar | 6$^2$ | 2 |
| 8 | O Camporese | 6 | 6 | | | | | | | | | | | 2 | J Aguilera | 7$^7$ | 6 |
| | J Potier | 3 | 0 | | 8 | O Camporese | 6 | 6 | | | | | | | | | |
| | K Braasch | 0 | 1 | | | S Doseděl | 0 | 3 | | | | | | | | | |
| | S Doseděl | 6 | 6 | | | | | | | 8 | O Camporese | 3 | 2 | | | | |
| | F Yunis | 6 | 6 | | | | | | | 2 | J Aguilera | 6 | 6 | | | | |
| Q | O Jonsson | 1 | 2 | | | F Yunis | 6 | 4 | 0 | | | | | | | | |
| Q | M Năstase | 0 | 3 | | 2 | J Aguilera | 3 | 6 | 6 | | | | | | | | |
| 2 | J Aguilera | 6 | 6 | | | | | | | | | | | | | | |