# 1991 Volkswagen Cup – Singles

Steffi Graf successfully defended her title by defeating Jana Novotná 6–3, 6–3 in the final.

## Seeds

The first four seeds received a bye into the second round.
* Steffi Graf (champion)
* Arantxa Sánchez Vicario (semifinals)
* Jana Novotná (final)
* Katerina Maleeva (quarterfinals)
* Leila Meskhi (second round)
* Judith Wiesner (quarterfinals)
* Anke Huber (quarterfinals)
* Barbara Paulus (semifinals)

## 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 |
| 1 | Steffi Graf | 6 | 6 | | | | |
| 8 | Barbara Paulus | 1 | 1 | | | | |
| 8 | Barbara Paulus | 1 | 1 | 1 | Steffi Graf | 6 | 6 |
| | | | | 3 | Jana Novotná | 3 | 3 |
| 3 | Jana Novotná | 6 | 6 | 3 | Jana Novotná | 3 | 3 |
| 2 | Arantxa Sánchez Vicario | 3 | 2 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | S Graf | 6 | 6 | | | | | | | | | |
| Q | K Boogert | 2 | 4 | | | P Langrová | 0 | 1 | | | | | | | | | |
| | P Langrová | 6 | 6 | | | | | | 1 | S Graf | 6 | 7$^7$ | | | | | |
| Q | C Porwik | 6 | 6 | | | | | | 6 | J Wiesner | 1 | 6$^1$ | | | | | |
| | K Kschwendt | 3 | 1 | | Q | C Porwik | 2 | 5 | | | | | | | | | |
| | E Brioukhovets | 6$^6$ | 3 | | 6 | J Wiesner | 6 | 7 | | | | | | | | | |
| 6 | J Wiesner | 7$^8$ | 6 | | | | | | | | | | | 1 | S Graf | 6 | 6 |
| | | | | | | | | | | | | | | 8 | B Paulus | 1 | 1 |
| | | | | | 4 | K Maleeva | 6 | 6 | | | | | | | | | |
| | A Strnadová | 4 | 6 | 2 | | E Švíglerová | 4 | 3 | | | | | | | | | |
| | E Švíglerová | 6 | 4 | 6 | | | | | 4 | K Maleeva | 6$^4$ | 6 | 6$^5$ | | | | |
| | L Harvey Wild | 3 | 7$^8$ | 4 | | | | | 8 | B Paulus | 7$^7$ | 0 | 7$^7$ | | | | |
| | R Zrubáková | 6 | 6$^6$ | 6 | | R Zrubáková | 6$^4$ | 1 | | | | | | | | | |
| | R Rajchrtová | 1 | 7$^7$ | 2 | 8 | B Paulus | 7$^7$ | 6 | | | | | | | | | |
| 8 | B Paulus | 6 | 6$^3$ | 6 | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | A Huber | 6 | 6 | | | | | | | | | | | | | |
| Q | K Nowak | 2 | 1 | 7 | A Huber | 7$^7$ | 6 | | | | | | | | | |
| | I Demongeot | 7$^7$ | 6 | | I Demongeot | 6$^2$ | 3 | | | | | | | | | |
| | M Paz | 6$^5$ | 4 | | | | | 7 | A Huber | 6 | 3 | 4 | | | | |
| | N Ercegović | 7$^7$ | 6 | | | | | 3 | J Novotná | 3 | 6 | 6 | | | | |
| | W Probst | 6$^1$ | 2 | | N Ercegović | 4 | 4 | | | | | | | | | |
| | | | | 3 | J Novotná | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | 3 | J Novotná | 6 | 6 |
| 5 | L Meskhi | 6 | 6 | | | | | | | | | | 2 | A Sánchez Vicario | 3 | 2 |
| | M Bollegraf | 3 | 4 | 5 | L Meskhi | 2 | 3 | | | | | | | | | |
| | K Rinaldi | 4 | 1 | | B Rittner | 6 | 6 | | | | | | | | | |
| | B Rittner | 6 | 6 | | | | | | B Rittner | 1 | 1 | | | | | |
| | M Kochta | 6 | 6 | | | | | 2 | A Sánchez Vicario | 6 | 6 | | | | | |
| Q | V Milvidskaia | 4 | 4 | | M Kochta | 6$^7$ | 1 | | | | | | | | | |
| | | | | 2 | A Sánchez Vicario | 7$^9$ | 6 | | | | | | | | | |