# 1991 Trofeo Ilva-Coppa Mantegazza – Singles

Raffaella Reggi was the defending champion, but did not compete this year.
Emanuela Zardo won the title by defeating Petra Ritter 7–5, 6–2 in the final.

## Seeds

* Federica Bonsignori (quarterfinals)
* Ann Grossman (first round)
* Laura Golarsa (second round)
* Katia Piccolini (first round)
* Conchita Martínez (withdrew)
* Cathy Caverzasio (first round)
* Laura Garrone (withdrew)
* Alexia Dechaume (second round)
* Emanuela Zardo (champion)

## 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 |
| | Petra Ritter | 3 | 6 | 6 | | | | |
| | Silvia Farina | 6 | 1 | 0 | | | | |
| | Silvia Farina | 6 | 1 | 0 | | Petra Ritter | 5 | 2 |
| | | | | | 9 | Emanuela Zardo | 7 | 6 |
| LL | Nanne Dahlman | 0 | 3 | | 9 | Emanuela Zardo | 7 | 6 |
| 9 | Emanuela Zardo | 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 |
| 1 | F Bonsignori | 6 | 6 | | | | | | | | | | | | | | | |
| | C Bartos | 4 | 3 | | 1 | F Bonsignori | 6 | 6 | | | | | | | | | | |
| | B Reinstadler | 5 | 7$^9$ | 2 | | N Herreman | 4 | 3 | | | | | | | | | | |
| | N Herreman | 7 | 6$^7$ | 6 | | | | | | 1 | F Bonsignori | 1 | 6 | 4 | | | | |
| | P Ritter | 6 | 6 | | | | | | | | P Ritter | 6 | 0 | 6 | | | | |
| Q | C Kuhlman | 3 | 0 | | | P Ritter | 6 | 2 | 6 | | | | | | | | | |
| | C Dahlman | 2 | 0 | | 8 | A Dechaume | 2 | 6 | 2 | | | | | | | | | |
| 8 | A Dechaume | 6 | 6 | | | | | | | | | | | | P Ritter | 3 | 6 | 6 |
| 4 | K Piccolini | 3 | 4 | | | | | | | | | | | | S Farina | 6 | 1 | 0 |
| | S Farina | 6 | 6 | | | S Farina | 6 | 6 | | | | | | | | | | |
| | M Laval | 3 | 1 | | LL | M Oremans | 3 | 3 | | | | | | | | | | |
| LL | M Oremans | 6 | 6 | | | | | | | | S Farina | 2 | 6 | 6 | | | | |
| | F Labat | 6 | 4 | 6 | | | | | | | F Labat | 6 | 3 | 4 | | | | |
| | M Pierce | 3 | 6 | 3 | | F Labat | 6 | 6 | | | | | | | | | | |
| | F Romano | 6 | 6 | | | F Romano | 4 | 4 | | | | | | | | | | |
| 6 | C Caverzasio | 3 | 4 | | | | | | | | | | | | | | | |

### Bottom half

| 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 |
| LL | N Dahlman | 7 | 6 | | | | | | | | | | | | | | |
| | C Mothes-Jobkel | 5 | 1 | LL | N Dahlman | 1 | 6 | 7 | | | | | | | | | |
| | A Kanellopoulou | 6 | 6 | | A Kanellopoulou | 6 | 1 | 5 | | | | | | | | | |
| LL | L Lapi | 2 | 4 | | | | | | LL | N Dahlman | 6 | 3 | 6 | | | | |
| Q | P Thorén | 6 | 6 | | | | | | Q | P Thorén | 2 | 6 | 3 | | | | |
| | R Grande | 4 | 1 | Q | P Thorén | 6 | 6 | | | | | | | | | | |
| | P Etchemendy | 0 | 3 | 3 | L Golarsa | 3 | 4 | | | | | | | | | | |
| 3 | L Golarsa | 6 | 6 | | | | | | | | | | | LL | N Dahlman | 0 | 3 |
| 9 | E Zardo | 6 | 6 | | | | | | | | | | | 9 | E Zardo | 6 | 6 |
| | M Maruska | 1 | 3 | 9 | E Zardo | 6 | 6 | | | | | | | | | | |
| Q | A Blumberga | 2 | 0 | | S Rottier | 3 | 1 | | | | | | | | | | |
| | S Rottier | 6 | 6 | | | | | | 9 | E Zardo | 5 | 6 | 6 | | | | |
| | N van Lottum | 6 | 7 | | | | | | | N van Lottum | 7 | 3 | 2 | | | | |
| | A Kijimuta | 1 | 5 | | N van Lottum | 7$^7$ | 6 | | | | | | | | | | |
| Q | R Bobková | 6 | 6 | Q | R Bobková | 6$^3$ | 0 | | | | | | | | | | |
| 2 | A Grossman | 4 | 2 | | | | | | | | | | | | | | |