# 1991 Grand Prix de Tennis de Toulouse – Singles

The 1991 Grand Prix de Tennis de Toulouse was a men's tennis tournament played on indoor carpet courts in Toulouse, France that was part of the World Series of the 1991 ATP Tour. It was the tenth edition of the tournament and was held from 30 September until 6 October 1991.

## Seeds

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
* Guy Forget (champion)
* Magnus Gustafsson (first round)
* Jakob Hlasek (second round)
* Jonas Svensson (first round)
* Alexander Volkov (semifinals)
* John McEnroe (quarterfinals)
* Marc Rosset (quarterfinals)
* Patrick McEnroe (second 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 | Guy Forget | 7 | 3 | 6 | | | | |
| | Richard Krajicek | 6 | 6 | 4 | | | | |
| | Richard Krajicek | 6 | 6 | 4 | 1 | Guy Forget | 6 | 7 |
| | | | | | | Amos Mansdorf | 2 | 6 |
| 5 | Alexander Volkov | 5 | 7 | 1 | | Amos Mansdorf | 2 | 6 |
| | Amos Mansdorf | 7 | 5 | 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 | G Forget | 6 | 6 | | | | | | | | | | | | | | | | |
| | J Carlsson | 4 | 4 | | 1 | G Forget | 6 | 3 | 6 | | | | | | | | | | |
| | T Champion | 5 | 7 | 6 | | T Champion | 1 | 6 | 3 | | | | | | | | | | |
| | Y Noah | 7 | 5 | 3 | | | | | | 1 | G Forget | 3 | 6 | 6 | | | | | |
| | T Enqvist | 6 | 6 | | | | | | | 7 | M Rosset | 6 | 3 | 3 | | | | | |
| | L Pimek | 1 | 2 | | | T Enqvist | 4 | 6 | 6 | | | | | | | | | | |
| 7 | M Rosset | 6 | 6 | | 7 | M Rosset | 6 | 1 | 7 | | | | | | | | | | |
| | F Santoro | 1 | 3 | | | | | | | | | | | | 1 | G Forget | 7 | 3 | 6 |
| 3 | J Hlasek | 7 | 6 | | | | | | | | | | | | | R Krajicek | 6 | 6 | 4 |
| | T Guardiola | 6 | 2 | | 3 | J Hlasek | 2 | 4 | | | | | | | | | | | |
| | R Krajicek | 6 | 6 | | | R Krajicek | 6 | 6 | | | | | | | | | | | |
| | F Fontang | 2 | 0 | | | | | | | | R Krajicek | 6 | 6 | | | | | | |
| | T Carbonell | 6 | 6 | 6 | | | | | | 6 | J McEnroe | 4 | 4 | | | | | | |
| | G Raoux | 7 | 4 | 3 | | T Carbonell | 1 | 4 | | | | | | | | | | | |
| 6 | J McEnroe | 3 | 6 | 6 | 6 | J McEnroe | 6 | 6 | | | | | | | | | | | |
| | A Boetsch | 6 | 2 | 2 | | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 5 | A Volkov | 3 | 6 | 6 | | | | | | | | | | | | | | | |
| | N Kulti | 6 | 2 | 3 | 5 | A Volkov | 7 | 4 | 6 | | | | | | | | | | |
| | T Nijssen | 6 | 7 | 6 | | T Nijssen | 5 | 6 | 4 | | | | | | | | | | |
| | C Saceanu | 7 | 5 | 4 | | | | | | 5 | A Volkov | 5 | 7 | 6 | | | | | |
| | C Pioline | 6 | 6 | 6 | | | | | | | C Pioline | 7 | 6 | 2 | | | | | |
| | K Curren | 4 | 7 | 3 | | C Pioline | 7 | 7 | | | | | | | | | | | |
| | R Agénor | 6 | 7 | | | R Agénor | 5 | 6 | | | | | | | | | | | |
| 4 | J Svensson | 4 | 6 | | | | | | | | | | | | 5 | A Volkov | 5 | 7 | 1 |
| 8 | P McEnroe | 3 | 7 | 6 | | | | | | | | | | | | A Mansdorf | 7 | 5 | 6 |
| | C Caratti | 6 | 5 | 2 | 8 | P McEnroe | 3 | 5 | | | | | | | | | | | |
| | C Bergström | 6 | 6 | 6 | | C Bergström | 6 | 7 | | | | | | | | | | | |
| | J-P Fleurian | 7 | 1 | 1 | | | | | | | C Bergström | 4 | 4 | | | | | | |
| | A Mronz | 6 | 4 | 6 | | | | | | | A Mansdorf | 6 | 6 | | | | | | |
| | P Baur | 4 | 6 | 1 | | A Mronz | 5 | 6 | 2 | | | | | | | | | | |
| | A Mansdorf | 6 | 6 | | | A Mansdorf | 7 | 4 | 6 | | | | | | | | | | |
| 2 | M Gustafsson | 4 | 1 | | | | | | | | | | | | | | | | |