# 1991 Kremlin Cup – Singles

Andrei Cherkasov was the defending champion and won in the final 7–6$^{(7–2)}$, 3–6, 7–6$^{(7–5)}$, against Jakob Hlasek.

## Seeds

* Karel Nováček (second round)
* Petr Korda (first round)
* Jakob Hlasek (final)
* Andrei Cherkasov (champion)
* Jan Siemerink (quarterfinals)
* n/a
* Horst Skoff (first round)
* Alexander Volkov (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 | Final |
| | Marcos Aurelio Gorriz | 3 | 4 | | | | | |
| 4 | Andrei Cherkasov | 6 | 6 | | | | | |
| 4 | Andrei Cherkasov | 6 | 6 | 4 | Andrei Cherkasov | 7$^7$ | 3 | 7$^7$ |
| | | | | 3 | Jakob Hlasek | 6$^2$ | 6 | 6$^5$ |
| 3 | Jakob Hlasek | 6 | 6 | 3 | Jakob Hlasek | 6$^2$ | 6 | 6$^5$ |
| 8 | Alexander Volkov | 4 | 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 | K Nováček | 7$^7$ | 6 | | | | | | | | | | | | | | |
| | U Riglewski | 6$^5$ | 2 | | 1 | K Nováček | 3 | 5 | | | | | | | | | |
| | C-U Steeb | 6 | 7$^7$ | | | C-U Steeb | 6 | 7 | | | | | | | | | |
| | A Mansdorf | 3 | 6$^2$ | | | | | | | C-U Steeb | 6 | 2 | 6$^6$ | | | | |
| | MA Gorriz | 2 | 6 | 6 | | | | | | MA Gorriz | 2 | 6 | 7$^8$ | | | | |
| Q | HJ Davids | 6 | 3 | 2 | | MA Gorriz | w/o | | | | | | | | | | |
| | T Högstedt | 6 | 6 | | | T Högstedt | | | | | | | | | | | |
| 7 | H Skoff | 3 | 0 | | | | | | | | | | | | MA Gorriz | 3 | 4 |
| 4 | A Cherkasov | 6 | 6 | | | | | | | | | | | 4 | A Cherkasov | 6 | 6 |
| Q | F Krumrey | 3 | 4 | | 4 | A Cherkasov | 6 | 6 | | | | | | | | | |
| WC | A Medvedev | 7 | 6 | | WC | A Medvedev | 3 | 2 | | | | | | | | | |
| | T Woodbridge | 5 | 2 | | | | | | 4 | A Cherkasov | 4 | 6 | 7 | | | | |
| | J Stoltenberg | 3 | 6 | 6 | | | | | | M Rosset | 6 | 1 | 5 | | | | |
| | R Krajicek | 6 | 3 | 4 | | J Stoltenberg | 5 | 3 | | | | | | | | | |
| | M Rosset | 6 | 6 | | | M Rosset | 7 | 6 | | | | | | | | | |
| LL | S Soulié | 4 | 3 | | | | | | | | | | | | | | |

### Bottom 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 |
| 5 | J Siemerink | 6 | 6 | | | | | | | | | | | | | | |
| | E Jelen | 1 | 4 | | 5 | J Siemerink | 6 | 6 | | | | | | | | | |
| | C Adams | 6 | 4 | 6 | | C Adams | 3 | 3 | | | | | | | | | |
| | L Koslowski | 3 | 6 | 4 | | | | | 5 | J Siemerink | 7$^7$ | 2 | 2 | | | | |
| Q | R Haas | 6 | 6 | | | | | | 3 | J Hlasek | 6$^5$ | 6 | 6 | | | | |
| WC | S Skakun | 1 | 2 | | Q | R Haas | 3 | 4 | | | | | | | | | |
| Q | B Stanković | 6 | 3 | 6$^3$ | 3 | J Hlasek | 6 | 6 | | | | | | | | | |
| 3 | J Hlasek | 4 | 6 | 7$^7$ | | | | | | | | | | 3 | J Hlasek | 6 | 6 |
| 8 | A Volkov | 6 | 3 | 6 | | | | | | | | | | 8 | A Volkov | 4 | 2 |
| | D Nargiso | 3 | 6 | 3 | 8 | A Volkov | 7 | 6 | | | | | | | | | |
| | D Poliakov | 6 | 4 | | | D Poliakov | 5 | 3 | | | | | | | | | |
| | A Boetsch | 0 | 1$^r$ | | | | | | 8 | A Volkov | 7$^7$ | 4 | 6 | | | | |
| | J Grabb | 3 | 7 | 7 | | | | | | J Grabb | 6$^1$ | 6 | 3 | | | | |
| | T Mayotte | 6 | 5 | 5 | | J Grabb | 7$^7$ | 6 | | | | | | | | | |
| | M Woodforde | 0 | 6 | 6 | | M Woodforde | 6$^3$ | 2 | | | | | | | | | |
| 2 | P Korda | 6 | 2 | 3 | | | | | | | | | | | | | |