ATP 500 · 1991-02-11 · draw of 48
Philadelphia 1991
CarpetFinal
| 🇺🇸 Ivan Lendl | d. | 🇺🇸 Pete Sampras | 5-7 6-4 6-4 3-6 6-3 | H2H |
Semifinals
| 🇺🇸 Pete Sampras | d. | 🇺🇸 John McEnroe | 6-2 6-4 | H2H |
| 🇺🇸 Ivan Lendl | d. | 🇺🇸 Brad Gilbert | 6-4 3-6 6-4 | H2H |
Quarterfinals
| 🇺🇸 Pete Sampras | d. | 🇨🇿 Petr Korda | 6-4 6-0 | H2H |
| 🇺🇸 John McEnroe | d. | 🇫🇮 Aki Rahunen | 7-5 6-3 | H2H |
| 🇺🇸 Brad Gilbert | d. | 🇺🇸 Kevin Curren | 4-6 6-3 6-0 | H2H |
| 🇺🇸 Ivan Lendl | d. | 🇩🇪 Michael Stich | 6-2 7-6(7) | H2H |
Round of 16
| 🇺🇸 Pete Sampras | d. | 🇺🇸 MaliVai Washington | 6-3 7-6(7) | H2H |
| 🇨🇿 Petr Korda | d. | 🇿🇦 Wayne Ferreira | 7-5 7-6(3) | H2H |
| 🇺🇸 John McEnroe | d. | 🇦🇺 Wally Masur | 7-6(2) 6-4 | H2H |
| 🇫🇮 Aki Rahunen | d. | 🇺🇸 Jim Grabb | 6-7(3) 6-1 6-3 | H2H |
| 🇺🇸 Kevin Curren | d. | 🇦🇺 Darren Cahill | 6-7(7) 6-3 7-6(2) | H2H |
| 🇺🇸 Brad Gilbert | d. | 🇳🇱 Paul Haarhuis | 7-6(3) 6-1 | H2H |
| 🇩🇪 Michael Stich | d. | 🇺🇸 Chuck Adams | 6-4 6-4 | H2H |
| 🇺🇸 Ivan Lendl | d. | 🇿🇦 Gary Muller | 7-6(5) 6-3 | H2H |
Round of 32
| 🇺🇸 Pete Sampras | d. | 🇨🇿 Milan Srejber | 6-2 7-5 | H2H |
| 🇺🇸 MaliVai Washington | d. | 🇺🇸 Patrick McEnroe | 6-0 6-3 | H2H |
| 🇨🇿 Petr Korda | d. | 🇵🇪 Jaime Yzaga | 6-4 6-3 | H2H |
| 🇿🇦 Wayne Ferreira | d. | 🇺🇸 Tim Mayotte | 6-4 6-2 | H2H |
| 🇺🇸 John McEnroe | d. | 🇩🇪 Alexander Mronz | 6-1 6-2 | H2H |
| 🇦🇺 Wally Masur | d. | 🇿🇦 Christo Van Rensburg | 4-6 7-6(1) 7-6(5) | H2H |
| 🇫🇮 Aki Rahunen | d. | 🇳🇱 Mark Koevermans | 6-1 6-2 | H2H |
| 🇺🇸 Jim Grabb | d. | 🇺🇸 Jim Courier | 6-2 6-4 | H2H |
| 🇺🇸 Kevin Curren | d. | 🇺🇸 Jay Berger | 6-1 6-2 | H2H |
| 🇦🇺 Darren Cahill | d. | 🇸🇪 Thomas Hogstedt | 6-4 6-2 | H2H |
| 🇳🇱 Paul Haarhuis | d. | 🇩🇪 Udo Riglewski | 6-1 6-3 | H2H |
| 🇺🇸 Brad Gilbert | d. | 🇪🇸 Tomas Carbonell | 6-3 6-3 | H2H |
| 🇩🇪 Michael Stich | d. | 🇮🇹 Cristiano Caratti | 6-2 6-4 | H2H |
| 🇺🇸 Chuck Adams | d. | 🇺🇸 Derrick Rostagno | 7-5 6-3 | H2H |
| 🇿🇦 Gary Muller | d. | 🇮🇹 Renzo Furlan | 6-7(5) 6-3 6-4 | H2H |
| 🇺🇸 Ivan Lendl | d. | 🇫🇷 Guillaume Raoux | 6-1 7-5 | H2H |
Round of 64
| 🇨🇿 Milan Srejber | d. | 🇺🇸 Scott Davis | 6-4 6-7(2) 6-3 | H2H |
| 🇺🇸 MaliVai Washington | d. | 🇦🇹 Alex Antonitsch | 7-6(1) 4-6 6-0 | H2H |
| 🇵🇪 Jaime Yzaga | d. | 🇸🇪 Anders Jarryd | 6-3 6-3 | H2H |
| 🇿🇦 Wayne Ferreira | d. | 🇫🇷 Jean-Philippe Fleurian | 7-5 6-4 | H2H |
| 🇩🇪 Alexander Mronz | d. | 🇦🇷 Horacio de la Pena | 6-2 6-2 | H2H |
| 🇿🇦 Christo Van Rensburg | d. | 🇺🇸 Brad Pearce | 6-2 6-1 | H2H |
| 🇫🇮 Aki Rahunen | d. | 🇨🇦 Grant Connell | 7-6(11) 7-5 | H2H |
| 🇺🇸 Jim Grabb | d. | 🇩🇪 Patrik Kuhnen | 6-4 6-4 | H2H |
| 🇺🇸 Kevin Curren | d. | 🇦🇺 Mark Kratzmann | 6-3 6-7(4) 6-4 | H2H |
| 🇸🇪 Thomas Hogstedt | d. | 🇮🇳 Ramesh Krishnan | 6-3 6-1 | H2H |
| 🇩🇪 Udo Riglewski | d. | 🇺🇸 Glenn Layendecker | 6-3 6-7(3) 6-0 | H2H |
| 🇪🇸 Tomas Carbonell | d. | 🇮🇱 Gilad Bloom | 6-1 6-1 | H2H |
| 🇮🇹 Cristiano Caratti | d. | 🇺🇸 Jeff Tarango | 7-5 6-4 | H2H |
| 🇺🇸 Chuck Adams | d. | 🇿🇦 Grant Stafford | 6-2 6-2 | H2H |
| 🇮🇹 Renzo Furlan | d. | 🇫🇮 Veli Paloheimo | 4-6 7-5 6-4 | H2H |
| 🇫🇷 Guillaume Raoux | d. | 🇺🇸 Dan Goldie | 6-4 7-6(7) | H2H |