# 1990 Renault Slovenian Open – Singles

This was the first edition of the tournament.

## Seeds

* unknown player has withdrawn
* Andrew Sznajder (second round)
* Mark Koevermans (semifinals)
* Omar Camporese (semifinals)
* Bruno Orešar (second round)
* Christian Miniussi (second round)
* Fernando Luna (second round)
* Magnus Larsson

## 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 |
| 8 | Magnus Larsson | 1 | 6 | 7 | | | | | |
| 4 | Omar Camporese | 6 | 1 | 6 | | | | | |
| 4 | Omar Camporese | 6 | 1 | 6 | 8 | Magnus Larsson | 7 | 6 | 7 |
| | | | | | | Diego Nargiso | 5 | 7 | 6 |
| 3 | Mark Koevermans | 4 | 4 | | | Diego Nargiso | 5 | 7 | 6 |
| | Diego Nargiso | 6 | 6 | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| LL | G Schaller | 4 | 7 | 4 | | | | | | | | | | | | | | |
| | P Vojtíšek | 6 | 6 | 6 | | P Vojtíšek | 2 | 3 | | | | | | | | | | |
| | A Võsand | 6 | 6 | | | A Võsand | 6 | 6 | | | | | | | | | | |
| | N Marques | 1 | 1 | | | | | | | | A Võsand | 3 | 3 | | | | | |
| | J Cunha-Silva | 6 | 4 | 7 | | | | | | 8 | M Larsson | 6 | 6 | | | | | |
| | S Pescosolido | 4 | 6 | 6 | | J Cunha-Silva | 1 | 1 | | | | | | | | | | |
| Q | N Bruno | 3 | 4 | | 8 | M Larsson | 6 | 6 | | | | | | | | | | |
| 8 | M Larsson | 6 | 6 | | | | | | | | | | | 8 | M Larsson | 1 | 6 | 7 |
| 4 | O Camporese | 6 | 6 | | | | | | | | | | | 4 | O Camporese | 6 | 1 | 6 |
| | G Pozzi | 4 | 1 | | 4 | O Camporese | 6 | 4 | 6 | | | | | | | | | |
| WC | F Cancellotti | 5 | 4 | | | M Tabares | 4 | 6 | 2 | | | | | | | | | |
| | M Tabares | 6 | 7 | | | | | | | 4 | O Camporese | 6 | 6 | | | | | |
| | C Geyer | 1 | 4 | | | | | | | | B Wuyts | 2 | 4 | | | | | |
| | B Wuyts | 6 | 6 | | | B Wuyts | 7 | 6 | | | | | | | | | | |
| | N Kulti | 0 | 6 | 3 | 5 | B Orešar | 6 | 2 | | | | | | | | | | |
| 5 | B Orešar | 6 | 3 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | C Miniussi | 7 | 6 | | | | | | | | | | | | | | | |
| | S Guy | 6 | 3 | | 6 | C Miniussi | 6 | 4 | | | | | | | | | | |
| Q | J Pino | 3 | 0 | | | C Costa | 6 | 6 | | | | | | | | | | |
| | C Costa | 6 | 6 | | | | | | | | C Costa | 6 | 6 | 3 | | | | |
| WC | I Božič | 3 | 6 | 7 | | | | | | 3 | M Koervermans | 3 | 7 | 6 | | | | |
| | C Caratti | 6 | 3 | 6 | | I Božič | 3 | 6 | 2 | | | | | | | | | |
| | R Furlan | 3 | 1 | | 3 | M Koervermans | 6 | 2 | 6 | | | | | | | | | |
| 3 | M Koervermans | 6 | 6 | | | | | | | | | | | | 3 | M Koervermans | 4 | 4 |
| 7 | F Luna | 6 | 6 | | | | | | | | | | | | | D Nargiso | 6 | 6 |
| Q | J Clavet | 4 | 2 | | 7 | F Luna | 4 | 3 | | | | | | | | | | |
| | D Nargiso | 7 | 4 | 6 | | D Nargiso | 6 | 6 | | | | | | | | | | |
| Q | R Vogel | 6 | 6 | 4 | | | | | | | D Nargiso | 6 | 6 | | | | | |
| | M Cierro | 6 | 6 | 6 | | | | | | | M Cierro | 4 | 1 | | | | | |
| WC | S Hiršzon | 4 | 7 | 1 | | M Cierro | 6 | 6 | | | | | | | | | | |
| WC | G Breznik | 3 | 3 | | | A Sznajder | 3 | 2 | | | | | | | | | | |
| 2 | A Sznajder | 6 | 6 | | | | | | | | | | | | | | | |