# 1990 Torneo Internazionale – Singles

This is the first edition of the tournament as part of the WTA Tour. Isabel Cueto won the inaugural title by defeating Barbara Paulus 6–2, 6–3 in the final.

## Seeds

* Barbara Paulus (final)
* Isabel Cueto (champion)
* Cathy Caverzasio (quarterfinals)
* Laura Lapi (first round)
* Angeliki Kanellopoulou (first round)
* Patricia Tarabini (withdrew)
* Petra Langrová (first round)
* Florencia Labat (first 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 |
| 1 | Barbara Paulus | 6 | 2 | 6 | | | | |
| Q | Francesca Romano | 2 | 6 | 1 | | | | |
| Q | Francesca Romano | 2 | 6 | 1 | 1 | Barbara Paulus | 2 | 3 |
| | | | | | 2 | Isabel Cueto | 6 | 6 |
| | Beate Reinstadler | 1 | 1 | | 2 | Isabel Cueto | 6 | 6 |
| 2 | Isabel Cueto | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | B Paulus | 7$^7$ | 7 | | | | | | | | | | | | | | | | |
| | M Pierce | 6$^1$ | 5 | | 1 | B Paulus | 3 | 6 | 6 | | | | | | | | | | |
| WC | S Farina | 6 | 6 | | WC | S Farina | 6 | 4 | 2 | | | | | | | | | | |
| | B Romanò | 3 | 1 | | | | | | | 1 | B Paulus | 6 | 6 | | | | | | |
| | E Zardo | 7$^7$ | 3 | 6 | | | | | | | E Zardo | 3 | 4 | | | | | | |
| Q | H Kadzidroga | 6$^5$ | 6 | 2 | | E Zardo | 6 | 6 | | | | | | | | | | | |
| | C Cohen | 7$^{10}$ | 6 | | | C Cohen | 3 | 3 | | | | | | | | | | | |
| 7 | P Langrová | 6$^8$ | 4 | | | | | | | | | | | | 1 | B Paulus | 6 | 2 | 6 |
| 4 | L Lapi | 4 | 1 | | | | | | | | | | | | Q | F Romano | 2 | 6 | 1 |
| | K Piccolini | 6 | 6 | | | K Piccolini | 6 | 6 | | | | | | | | | | | |
| | S Goleš | 6 | | | | S Goleš | 2 | 1 | | | | | | | | | | | |
| | M Maruska | 4 | r | | | | | | | | K Piccolini | 6 | 4 | 4 | | | | | |
| | N Baudone | 6 | 6 | | | | | | | Q | F Romano | 0 | 6 | 6 | | | | | |
| | I Budařová | 3 | 3 | | | N Baudone | 6 | 2 | 3 | | | | | | | | | | |
| Q | R Bielsa | 4 | 5 | | Q | F Romano | 1 | 6 | 6 | | | | | | | | | | |
| Q | F Romano | 6 | 7 | | | | | | | | | | | | | | | | |

### 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 |
| 5 | A Kanellopoulou | 4 | 2 | | | | | | | | | | | | | | | |
| | F Bonsignori | 6 | 6 | | | F Bonsignori | 1 | 6 | 3 | | | | | | | | | |
| | B Reinstadler | 3 | 6 | 7$^7$ | | B Reinstadler | 6 | 2 | 6 | | | | | | | | | |
| | K Kschwendt | 6 | 4 | 6$^2$ | | | | | | | B Reinstadler | 6 | 4 | 7$^7$ | | | | |
| Q | C Nozzoli | 6$^7$ | 1 | | | | | | | 3 | C Caverzasio | 3 | 6 | 6$^4$ | | | | |
| | C Toleafoa | 7$^9$ | 6 | | | C Toleafoa | 2 | 3 | | | | | | | | | | |
| | J Pospíšilová | 5 | 0 | | 3 | C Caverzasio | 6 | 6 | | | | | | | | | | |
| 3 | C Caverzasio | 7 | 6 | | | | | | | | | | | | | B Reinstadler | 1 | 1 |
| 8 | F Labat | 4 | 1 | | | | | | | | | | | | 2 | I Cueto | 6 | 6 |
| | L Garrone | 6 | 6 | | | L Garrone | 3 | 4 | | | | | | | | | | |
| | S La Fratta | 3 | 0 | | | M Laval | 6 | 6 | | | | | | | | | | |
| | M Laval | 6 | 6 | | | | | | | | M Laval | 4 | 1 | | | | | |
| Q | P Kamstra | 7$^7$ | 4 | 3 | | | | | | 2 | I Cueto | 6 | 6 | | | | | |
| | L Lásková | 6$^4$ | 6 | 6 | | L Lásková | 4 | 7$^7$ | 1 | | | | | | | | | |
| | P Ritter | 1 | 6$^5$ | | 2 | I Cueto | 6 | 6$^3$ | 6 | | | | | | | | | |
| 2 | I Cueto | 6 | 7$^7$ | | | | | | | | | | | | | | | |