# 1991 GTE U.S. Men's Hard Court Championships – Singles

Boris Becker was the defending champion, but lost in the final to Pete Sampras. The score was 7–6$^{(7–2)}$, 3–6, 6–3.

## Seeds

The first eight seeds received a bye into the second round.
* Boris Becker (final)
* Jim Courier (semifinals)
* Andre Agassi (third round)
* Guy Forget (second round)
* Pete Sampras (champion)
* David Wheaton (semifinals)
* Emilio Sánchez (second round)
* Andrei Cherkasov (quarterfinals)
* Jakob Hlasek (quarterfinals)
* Alexander Volkov (third round)
* Anders Järryd (first round)
* Patrick McEnroe (third round)
* Ronald Agénor (first round)
* Fabrice Santoro (quarterfinals)
* Francisco Clavet (third round)
* Christian Bergström (third 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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Boris Becker | 7 | 7 | | | | | | | | | |
| 9 | Jakob Hlasek | 5 | 5 | | | | | | | | | |
| 9 | Jakob Hlasek | 5 | 5 | 1 | Boris Becker | 7$^7$ | 6 | | | | | |
| | | | | 6 | David Wheaton | 6$^5$ | 4 | | | | | |
| 14 | Fabrice Santoro | 1 | 4 | 6 | David Wheaton | 6$^5$ | 4 | | | | | |
| 6 | David Wheaton | 6 | 6 | | | | | | | | | |
| 6 | David Wheaton | 6 | 6 | | | | | 1 | Boris Becker | 6$^2$ | 6 | 3 |
| | | | | | | | | 5 | Pete Sampras | 7$^7$ | 3 | 6 |
| 5 | Pete Sampras | 7$^7$ | 6 | | | | | | | | | | 5 | Pete Sampras | 7$^7$ | 3 | 6 |
| | Richard Fromberg | 6$^1$ | 2 | | | | | | | | | |
| | Richard Fromberg | 6$^1$ | 2 | 5 | Pete Sampras | 6 | 7$^9$ | | | | | |
| | | | | 2 | Jim Courier | 3 | 6$^7$ | | | | | |
| 8 | Andrei Cherkasov | 2 | 5 | 2 | Jim Courier | 3 | 6$^7$ | | | | | |
| 2 | Jim Courier | 6 | 7 | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 1 | B Becker | 6 | 6 | | | | | | | | | |
| | D Pate | 6 | 7 | | D Pate | 3 | 2 | | | | | | | | | |
| | A Sznajder | 4 | 5 | | | | | | 1 | B Becker | 6 | 6 | | | | |
| Q | B Farrow | 4 | 4 | | | | | | 16 | C Bergström | 2 | 2 | | | | |
| | N Marques | 6 | 6 | | N Marques | 6$^2$ | 3 | | | | | | | | | |
| | W Ferreira | 3 | 3 | 16 | C Bergström | 7$^7$ | 6 | | | | | | | | | |
| 16 | C Bergström | 6 | 6 | | | | | | | | | | 1 | B Becker | 7 | 7 |
| 9 | J Hlasek | 7$^8$ | 6 | | | | | | | | | | 9 | J Hlasek | 5 | 5 |
| | G Connell | 6$^6$ | 3 | 9 | J Hlasek | 7 | 3 | 7 | | | | | | | | |
| Q | B Black | 3 | 0 | | R Weiss | 5 | 6 | 5 | | | | | | | | |
| | R Weiss | 6 | 6 | | | | | | 9 | J Hlasek | 6 | 6 | | | | |
| | J Sánchez | 5 | 4 | | | | | | | J Stoltenberg | 3 | 4 | | | | |
| | J Stoltenberg | 7 | 6 | | J Stoltenberg | 7$^7$ | 6 | | | | | | | | | |
| | | | | 7 | E Sánchez | 6$^4$ | 3 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | A Agassi | 7$^7$ | 7 | | | | | | | | | | |
| Q | K Kinnear | 6 | 6$^7$ | 7$^7$ | Q | K Kinnear | 6$^5$ | 5 | | | | | | | | | | |
| | JF Altur | 3 | 7$^9$ | 6$^4$ | | | | | | 3 | A Agassi | 6 | 5 | 2 | | | | |
| | C Pioline | 6 | 6 | | | | | | | 14 | F Santoro | 2 | 7 | 6 | | | | |
| | N Borwick | 3 | 1 | | | C Pioline | 4 | 7 | 2 | | | | | | | | | |
| | T Carbonell | 2 | 2 | | 14 | F Santoro | 6 | 5 | 6 | | | | | | | | | |
| 14 | F Santoro | 6 | 6 | | | | | | | | | | | | 14 | F Santoro | 1 | 4 |
| 11 | A Järryd | 6$^3$ | 1 | | | | | | | | | | | | 6 | D Wheaton | 6 | 6 |
| WC | S Bryan | 7$^7$ | 6 | | WC | S Bryan | 6 | 3 | 7$^7$ | | | | | | | | | |
| | K Evernden | 7$^7$ | 5 | 6$^4$ | Q | C N'Goran | 2 | 6 | 6$^0$ | | | | | | | | | |
| Q | C N'Goran | 6$^5$ | 7 | 7$^7$ | | | | | | WC | S Bryan | 3 | 5 | | | | | |
| | A Krickstein | 6 | 4 | 6 | | | | | | 6 | D Wheaton | 6 | 7 | | | | | |
| Q | J Stark | 3 | 6 | 4 | | A Krickstein | 4 | 5 | | | | | | | | | | |
| | | | | | 6 | D Wheaton | 6 | 7 | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | P Sampras | 6 | 6 | | | | | | | | |
| | P Lundgren | 6 | 3 | 2 | Q | G Stafford | 4 | 2 | | | | | | | | |
| Q | G Stafford | 4 | 6 | 6 | | | | | 5 | P Sampras | 6 | 6 | | | | |
| | S Pescosolido | 6 | 6 | | | | | | 12 | P McEnroe | 3 | 4 | | | | |
| WC | R Leach | 3 | 3 | | | S Pescosolido | 6$^5$ | r | | | | | | | | |
| | B Pearce | 5 | 1 | | 12 | P McEnroe | 7$^7$ | | | | | | | | | |
| 12 | P McEnroe | 7 | 6 | | | | | | | | | | 5 | P Sampras | 7$^7$ | 6 |
| 13 | R Agénor | 6 | 4 | 6$^{11}$ | | | | | | | | | | R Fromberg | 6$^1$ | 2 |
| Q | B Steven | 4 | 6 | 7$^{13}$ | Q | B Steven | 2 | 2 | | | | | | | | |
| | R Fromberg | 6 | 6 | | | R Fromberg | 6 | 6 | | | | | | | | |
| | S Davis | 4 | 2 | | | | | | | R Fromberg | 6 | 7 | | | | |
| | J Brown | 4 | 4 | | | | | | | T Mayotte | 1 | 5 | | | | |
| | T Mayotte | 6 | 6 | | | T Mayotte | 7$^8$ | 6 | | | | | | | | |
| | | | | | 4 | G Forget | 6$^6$ | 1 | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | A Cherkasov | 2 | 7$^7$ | 6 | | | | | | | | |
| | T Witsken | 6 | 4 | 6 | | T Witsken | 6 | 6$^4$ | 2 | | | | | | | | |
| | R Krishnan | 1 | 6 | 1 | | | | | | 8 | A Cherkasov | 7$^7$ | 7 | | | | |
| WC | D Witt | 5 | 6 | 3 | | | | | | 10 | A Volkov | 6$^4$ | 5 | | | | |
| | S Matsuoka | 7 | 3 | 6 | | S Matsuoka | 6$^5$ | 2 | | | | | | | | | |
| | G Muller | 6 | 2 | 3 | 10 | A Volkov | 7$^7$ | 6 | | | | | | | | | |
| 10 | A Volkov | 3 | 6 | 6 | | | | | | | | | | 8 | A Cherkasov | 2 | 5 |
| 15 | F Clavet | 7 | 6 | | | | | | | | | | | 2 | J Courier | 6 | 7 |
| | G Raoux | 5 | 2 | | 15 | F Clavet | 6 | 6 | | | | | | | | | |
| | R Gilbert | 6$^5$ | 6 | 6 | | R Gilbert | 3 | 3 | | | | | | | | | |
| WC | T Martin | 7$^7$ | 4 | 4 | | | | | | 15 | F Clavet | 2 | 1 | | | | |
| WC | J Pugh | 7$^8$ | 5 | 6 | | | | | | 2 | J Courier | 6 | 6 | | | | |
| | K Curren | 6$^6$ | 7 | 3 | WC | J Pugh | 4 | 4 | | | | | | | | | |
| | | | | | 2 | J Courier | 6 | 6 | | | | | | | | | |