1991 ATP German Open – Doubles
# 1991 ATP German Open – Doubles

The 1991 German Open was a tennis tournament played on outdoor clay courts and was part of the ATP Super 9 of the 1991 ATP Tour. It took place at the Rothenbaum Tennis Center in Hamburg, Germany, from May 6 through May 13, 1991. Sergio Casal and Emilio Sánchez won in the final against Cássio Motta and Danie Visser, 7–6, 7–6.

## Seeds

* Sergio Casal / Emilio Sánchez (champions)
* Udo Riglewski / Michael Stich (Quarterfinal)
* Patrick Galbraith / Todd Witsken (Quarterfinal)
* Broderick Dyke / Laurie Warder (second round)
* Sergi Bruguera / Jim Courier (semifinal)
* Mark Koevermans / Michiel Schapers (first round)
* Omar Camporese / Mark Woodforde (first round)
* Cássio Motta / Danie Visser (final)

## 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

| Semifinal | Semifinal | Semifinal | Semifinal | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - |
| 1 | Sergio Casal Emilio Sánchez | 6 | 6 | | | | | |
| 5 | Sergi Bruguera Jim Courier | 3 | 3 | | | | | |
| 5 | Sergi Bruguera Jim Courier | 3 | 3 | 1 | Sergio Casal Emilio Sánchez | 4 | 6 | 6 |
| | | | | 8 | Cássio Motta Danie Visser | 6 | 3 | 2 |
| | Gustavo Luza Javier Sánchez | 4 | 4 | 8 | Cássio Motta Danie Visser | 6 | 3 | 2 |
| 8 | Cássio Motta Danie Visser | 6 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinal | Quarterfinal | Quarterfinal | Quarterfinal | Quarterfinal | Semifinal | Semifinal | Semifinal | Semifinal |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | | | | | 1 | S Casal E Sánchez | 3 | 7 | 6 | | | | | | | | | |
| | T Carbonell W Ferreira | 7 | 4 | 3 | | G Ivanišević G Prpić | 6 | 5 | 4 | | | | | | | | | |
| | G Ivanišević G Prpić | 5 | 6 | 6 | | | | | | 1 | S Casal E Sánchez | 7 | 6 | | | | | |
| | K Nováček L Pimek | 7 | 3 | 3 | | | | | | | P McEnroe P Sampras | 6 | 0 | | | | | |
| | P McEnroe P Sampras | 5 | 6 | 6 | | P McEnroe P Sampras | 3 | 7 | 7 | | | | | | | | | |
| | JC Báguena V Flégl | 1 | 6 | 6 | | JC Báguena V Flégl | 6 | 6 | 5 | | | | | | | | | |
| 7 | O Camporese M Woodforde | 6 | 3 | 4 | | | | | | | | | | | 1 | S Casal E Sánchez | 6 | 6 |
| | | | | | | | | | | | | | | | 5 | S Bruguera J Courier | 3 | 3 |
| | | | | | 3 | P Galbraith T Witsken | 6 | 6 | 6 | | | | | | | | | |
| | J Brown S Cannon | 1 | 6 | | | R Båthman R Bergh | 3 | 7 | 4 | | | | | | | | | |
| | R Båthman R Bergh | 6 | 7 | | | | | | | 3 | P Galbraith T Witsken | 6 | 6 | 3 | | | | |
| WC | M Bahrami H Leconte | 3 | 3 | | | | | | | 5 | S Bruguera J Courier | 7 | 1 | 6 | | | | |
| WC | E Jelen C-U Steeb | 6 | 6 | | WC | E Jelen C-U Steeb | 6 | 1 | | | | | | | | | | |
| | C Beckman N Brown | 3 | 2 | | 5 | S Bruguera J Courier | 7 | 6 | | | | | | | | | | |
| 5 | S Bruguera J Courier | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinal | Quarterfinal | Quarterfinal | Quarterfinal | Quarterfinal | Semifinal | Semifinal | Semifinal | Semifinal |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 6 | M Koevermans M Schapers | 4 | 5 | | | | | | | | | | | | | |
| | S Edberg I Lendl | 6 | 6 | | S Edberg I Lendl | | | | | | | | | | | |
| | T Nijssen C Suk | 6 | 6 | | T Nijssen C Suk | w/o | | | | | | | | | | |
| | R Smith T Svantesson | 4 | 2 | | | | | | T Nijssen C Suk | 6 | 6 | | | | | |
| WC | P Kühnen A Mronz | 2 | 2 | | | | | | G Luza J Sánchez | 7 | 7 | | | | | |
| | G Luza J Sánchez | 6 | 6 | | G Luza J Sánchez | 6 | 7 | | | | | | | | | |
| | | | | 4 | B Dyke L Warder | 4 | 5 | | | | | | | | | |
| | | | | | | | | | | | | | | G Luza J Sánchez | 4 | 4 |
| 8 | C Motta D Visser | 6 | 6 | | | | | | | | | | 8 | C Motta D Visser | 6 | 6 |
| Q | D Engel A Mora | 1 | 1 | 8 | C Motta D Visser | 7 | 6 | | | | | | | | | |
| | S DeVries D Macpherson | 6 | 6 | | S DeVries D Macpherson | 6 | 2 | | | | | | | | | |
| | L Lavalle J Lozano | 3 | 2 | | | | | 8 | C Motta D Visser | 4 | 6 | 6 | | | | |
| | H de la Peña L Mattar | 4 | 4 | | | | | 2 | U Riglewski M Stich | 6 | 4 | 1 | | | | |
| Q | G Bloom A Boetsch | 6 | 6 | Q | G Bloom A Boetsch | 2 | 6 | | | | | | | | | |
| | | | | 2 | U Riglewski M Stich | 6 | 7 | | | | | | | | | |
