ATP 500 · 1991-07-15 · draw of 48
Stuttgart Outdoor 1991
ClayFinal
| 🇩🇪 Michael Stich | d. | 🇦🇷 Alberto Mancini | 1-6 7-6(9) 6-4 6-2 | H2H |
Semifinals
| 🇦🇷 Alberto Mancini | d. | 🇩🇪 Lars Koslowski | 4-6 6-1 6-3 | H2H |
| 🇩🇪 Michael Stich | d. | 🇪🇸 Francisco Clavet | 6-4 6-2 | H2H |
Quarterfinals
| 🇩🇪 Lars Koslowski | d. | 🇭🇷 Goran Prpic | 6-2 2-6 7-5 | H2H |
| 🇦🇷 Alberto Mancini | d. | 🇪🇸 German Lopez | 6-3 6-3 | H2H |
| 🇪🇸 Francisco Clavet | d. | 🇫🇷 Cedric Pioline | 6-3 6-7(3) 6-1 | H2H |
| 🇩🇪 Michael Stich | d. | 🇳🇱 Richard Krajicek | 6-4 3-6 7-6(2) | H2H |
Round of 16
| 🇩🇪 Lars Koslowski | d. | 🇫🇷 Guy Forget | 7-6(5) 7-6(9) | H2H |
| 🇭🇷 Goran Prpic | d. | 🇩🇪 Eric Jelen | 6-3 2-6 6-2 | H2H |
| 🇪🇸 German Lopez | d. | Ronald Agenor | 6-2 6-3 | H2H |
| 🇦🇷 Alberto Mancini | d. | 🇦🇷 Guillermo Perez-Roldan | 7-5 6-2 | H2H |
| 🇫🇷 Cedric Pioline | d. | 🇷🇺 Alexander Volkov | 6-2 4-6 6-3 | H2H |
| 🇪🇸 Francisco Clavet | d. | 🇪🇨 Andres Gomez | 6-3 6-3 | H2H |
| 🇳🇱 Richard Krajicek | d. | 🇦🇹 Horst Skoff | 6-3 6-4 | H2H |
| 🇩🇪 Michael Stich | d. | 🇪🇸 Javier Sanchez | 6-3 6-3 | H2H |
Round of 32
| 🇫🇷 Guy Forget | d. | 🇦🇺 Wally Masur | 5-7 7-6(3) 7-6(7) | H2H |
| 🇩🇪 Lars Koslowski | d. | 🇦🇷 Martin Jaite | 6-3 6-4 | H2H |
| 🇩🇪 Eric Jelen | d. | 🇸🇪 Jonas Svensson | 7-6(3) 6-1 | H2H |
| 🇭🇷 Goran Prpic | d. | 🇺🇾 Marcelo Filippini | 7-6(3) 6-2 | H2H |
| 🇪🇸 German Lopez | d. | 🇪🇸 Emilio Sanchez | 7-6(4) 7-6(11) | H2H |
| Ronald Agenor | d. | 🇨🇭 Marc Rosset | 6-1 3-6 6-3 | H2H |
| 🇦🇷 Guillermo Perez-Roldan | d. | 🇪🇸 Carlos Costa | 6-3 6-2 | H2H |
| 🇦🇷 Alberto Mancini | d. | 🇷🇺 Andrei Cherkasov | 4-6 6-4 6-2 | H2H |
| 🇫🇷 Cedric Pioline | d. | 🇨🇿 Karel Novacek | 6-1 1-6 6-3 | H2H |
| 🇷🇺 Alexander Volkov | d. | 🇩🇪 Jens Woehrmann | 6-2 6-3 | H2H |
| 🇪🇸 Francisco Clavet | d. | 🇮🇹 Omar Camporese | 7-5 6-0 | H2H |
| 🇪🇨 Andres Gomez | d. | 🇭🇷 Goran Ivanisevic | 4-6 6-3 7-6(3) | H2H |
| 🇳🇱 Richard Krajicek | d. | 🇸🇪 Magnus Gustafsson | 7-6(2) 5-7 7-6(0) | H2H |
| 🇦🇹 Horst Skoff | d. | 🇦🇷 Horacio de la Pena | 6-0 6-3 | H2H |
| 🇪🇸 Javier Sanchez | d. | 🇪🇸 Jordi Arrese | 4-6 6-1 6-4 | H2H |
| 🇩🇪 Michael Stich | d. | 🇫🇷 Fabrice Santoro | 6-3 7-6(3) | H2H |
Round of 64
| 🇦🇺 Wally Masur | d. | 🇸🇰 Marian Vajda | 4-6 6-3 6-3 | H2H |
| 🇩🇪 Lars Koslowski | d. | 🇪🇸 Francisco Roig | 7-6(0) 7-6(2) | H2H |
| 🇩🇪 Eric Jelen | d. | 🇩🇪 Carl-Uwe Steeb | 0-6 6-3 6-2 | H2H |
| 🇺🇾 Marcelo Filippini | d. | 🇸🇪 Nicklas Kulti | 6-2 4-6 7-5 | H2H |
| 🇪🇸 German Lopez | d. | 🇫🇷 Thierry Champion | 6-7(5) 6-3 6-2 | H2H |
| 🇨🇭 Marc Rosset | d. | 🇩🇪 Markus Naewie | 6-2 6-4 | H2H |
| 🇪🇸 Carlos Costa | d. | 🇳🇱 Mark Koevermans | 6-3 6-7(1) 6-0 | H2H |
| 🇦🇷 Alberto Mancini | d. | 🇳🇱 Paul Haarhuis | 6-4 6-2 | H2H |
| 🇫🇷 Cedric Pioline | d. | 🇫🇷 Yannick Noah | 6-3 6-2 | H2H |
| 🇩🇪 Jens Woehrmann | d. | 🇳🇱 Jan Siemerink | 7-6(4) 4-6 6-3 | H2H |
| 🇪🇸 Francisco Clavet | d. | 🇦🇹 Thomas Muster | 6-1 6-3 | H2H |
| 🇪🇨 Andres Gomez | d. | 🇮🇹 Renzo Furlan | 4-6 6-2 6-1 | H2H |
| 🇳🇱 Richard Krajicek | d. | 🇦🇷 Franco Davin | 6-2 6-4 | H2H |
| 🇦🇷 Horacio de la Pena | d. | 🇺🇸 Kevin Curren | 6-4 6-4 | H2H |
| 🇪🇸 Javier Sanchez | d. | 🇸🇪 Magnus Larsson | 6-3 6-0 | H2H |
| 🇫🇷 Fabrice Santoro | d. | 🇩🇪 Udo Riglewski | 6-0 6-1 | H2H |