# 1991 Norstar Bank Hamlet Challenge Cup – Singles

The singles event of the 1991 Norstar Bank Hamlet Challenge Cup consisted of 32 players including eight seeded players. First-seeded Stefan Edberg was the defending champion, but second-seeded Ivan Lendl defeated him 6–3, 6–2, in the final. It was Lendl's 13th and last win against Edberg, taking their head-to-head to 13–10.

## Seeds

* Stefan Edberg (final)
* Ivan Lendl (champion)
* David Wheaton (first round)
* John McEnroe (semifinals)
* Goran Ivanišević (first round)
* Jonas Svensson (first round)
* Alberto Mancini (first round)
* Omar Camporese (quarterfinals)

## 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 | Stefan Edberg | 6 | 7 | | | | |
| Q | Olivier Delaître | 1 | 6$^4$ | | | | |
| Q | Olivier Delaître | 1 | 6$^4$ | 1 | Stefan Edberg | 3 | 2 |
| | | | | 2/WC | Ivan Lendl | 6 | 6 |
| 4 | John McEnroe | 3 | 5 | 2/WC | Ivan Lendl | 6 | 6 |
| 2/WC | Ivan Lendl | 6 | 7 | | | | |

### 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 | S Edberg | 6 | 6 | | | | | | | | | | | | | | | |
| Q | C Garner | 1 | 1 | | 1 | S Edberg | 6 | 6 | | | | | | | | | | |
| | R Gilbert | 6 | 1 | 1 | | P Lundgren | 3 | 3 | | | | | | | | | | |
| | P Lundgren | 2 | 6 | 6 | | | | | | 1 | S Edberg | 6 | 4 | 6 | | | | |
| Q | T Martin | 3 | 4 | | | | | | | WC | J Connors | 3 | 6 | 4 | | | | |
| WC | J Connors | 6 | 6 | | WC | J Connors | 1 | 6 | 6 | | | | | | | | | |
| | N Kulti | 7 | 6 | | | N Kulti | 6 | 4 | 0 | | | | | | | | | |
| 7 | A Mancini | 6$^1$ | 2 | | | | | | | | | | | | 1 | S Edberg | 6 | 7 |
| 3/WC | D Wheaton | 1 | 7 | 6$^5$ | | | | | | | | | | | Q | O Delaître | 1 | 6$^4$ |
| | M Larsson | 6 | 6$^2$ | 7 | | M Larsson | 0 | 6 | 1 | | | | | | | | | |
| Q | O Delaître | 1 | 7 | 6 | Q | O Delaître | 6 | 2 | 6 | | | | | | | | | |
| | R Agénor | 6 | 6$^3$ | 2 | | | | | | Q | O Delaître | 6 | 6 | | | | | |
| | J-P Fleurian | 6 | 6 | | | | | | | | T Champion | 4 | 4 | | | | | |
| | M Rosset | 1 | 2 | | | J-P Fleurian | 7 | 4 | 5 | | | | | | | | | |
| | T Champion | 6 | 6 | | | T Champion | 5 | 6 | 7 | | | | | | | | | |
| 5 | G Ivanišević | 2 | 1 | | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | J Svensson | 6$^{11}$ | 5 | | | | | | | | | | | | | | |
| | F Santoro | 7 | 7 | | | F Santoro | 0 | 4 | | | | | | | | | |
| | L Mattar | 7 | 6 | | | L Mattar | 6 | 6 | | | | | | | | | |
| | M Vajda | 5 | 2 | | | | | | | | L Mattar | 3 | 1 | | | | |
| | A Mansdorf | 6$^5$ | 4 | | | | | | | 4 | J McEnroe | 6 | 6 | | | | |
| Q | P Arnold | 7 | 6 | | Q | P Arnold | 1 | 3 | | | | | | | | | |
| | G Bloom | 4 | 6 | 1 | 4 | J McEnroe | 6 | 6 | | | | | | | | | |
| 4 | J McEnroe | 6 | 4 | 6 | | | | | | | | | | 4 | J McEnroe | 3 | 5 |
| 8 | O Camporese | 6 | 6 | | | | | | | | | | | 2/WC | I Lendl | 6 | 7 |
| | J Oncins | 2 | 2 | | 8 | O Camporese | 6 | 3 | 6 | | | | | | | | |
| | J Siemerink | 6 | 4 | 3 | | P McEnroe | 3 | 6 | 3 | | | | | | | | |
| | P McEnroe | 4 | 6 | 6 | | | | | | 8 | O Camporese | 6$^5$ | 3 | | | | |
| | D Nargiso | 5 | 7 | 0 | | | | | | 2/WC | I Lendl | 7 | 6 | | | | |
| | E Jelen | 7 | 6$^7$ | 6 | | E Jelen | 2 | 0 | | | | | | | | | |
| | C-U Steeb | 4 | 6 | 3 | 2/WC | I Lendl | 6 | 6 | | | | | | | | | |
| 2/WC | I Lendl | 6 | 3 | 6 | | | | | | | | | | | | | |