# 1990 Mercedes Cup – Singles

Martín Jaite was the defending champion, but lost in the second round to Karel Nováček.
Goran Ivanišević won the title by defeating Guillermo Pérez Roldán 6–7$^{(2–7)}$, 6–1, 6–4, 7–6$^{(7–5)}$ in the final.

## Seeds

All seeds received a bye into the second round.
* Andrés Gómez (third round)
* Thomas Muster (second round, retired)
* Emilio Sánchez (semifinals)
* Martín Jaite (second round)
* Andrei Chesnokov (third round)
* Jim Courier (second round)
* Juan Aguilera (second round)
* Guy Forget (second round)
* Guillermo Pérez Roldán (final)
* Goran Ivanišević (champion)
* Carl-Uwe Steeb (second round)
* Henri Leconte (semifinals)
* Petr Korda (second round)
* Marc Rosset (second round)
* Mats Wilander (second round)
* Horst Skoff (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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final | Final | |
| 16 | Horst Skoff | 6 | 3 | 6$^4$ | | | | | | | | | | | | | |
| 9 | Guillermo Pérez Roldán | 2 | 6 | 7$^7$ | | | | | | | | | | | | | |
| 9 | Guillermo Pérez Roldán | 2 | 6 | 7$^7$ | 9 | Guillermo Pérez Roldán | 6$^3$ | 6 | 7$^7$ | | | | | | | | |
| | | | | | 12 | Henri Leconte | 7$^7$ | 3 | 6$^5$ | | | | | | | | |
| | Andrei Cherkasov | 6 | 4 | 4 | 12 | Henri Leconte | 7$^7$ | 3 | 6$^5$ | | | | | | | | |
| 12 | Henri Leconte | 4 | 6 | 6 | | | | | | | | | | | | | |
| 12 | Henri Leconte | 4 | 6 | 6 | | | | | | 9 | Guillermo Pérez Roldán | 7$^7$ | 1 | 4 | 6$^5$ | | |
| | | | | | | | | | | 10 | Goran Ivanišević | 6$^2$ | 6 | 6 | 7$^7$ | | |
| | Marcelo Filippini | 6 | 2 | | | | | | | | | | | | | 10 | Goran Ivanišević | 6$^2$ | 6 | 6 | 7$^7$ |
| 3 | Emilio Sánchez | 7 | 6 | | | | | | | | | | | | | | |
| 3 | Emilio Sánchez | 7 | 6 | | 3 | Emilio Sánchez | 4 | 4 | | | | | | | | | |
| | | | | | 10 | Goran Ivanišević | 6 | 6 | | | | | | | | | |
| 10 | Goran Ivanišević | 6 | 6 | | 10 | Goran Ivanišević | 6 | 6 | | | | | | | | | |
| WC | Eric Jelen | 2 | 3 | | | | | | | | | | | | | | |

### Top half
#### Section 1

| 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | A Gómez | 7 | 6 | | | | | | | | | | |
| | L Mattar | 6 | 6 | 7 | | L Mattar | 5 | 4 | | | | | | | | | | |
| WC | M Sinner | 3 | 7 | 5 | | | | | 1 | A Gómez | 5 | 6 | 4 | | | | | |
| | J Arias | 6 | 6 | | | | | | 16 | H Skoff | 7 | 0 | 6 | | | | | |
| | A Mancini | 4 | 3 | | | J Arias | 2 | 4 | | | | | | | | | | |
| | | | | | 16 | H Skoff | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 16 | H Skoff | 6 | 3 | 6$^4$ |
| | | | | | | | | | | | | | | 9 | G Pérez Roldán | 2 | 6 | 7$^7$ |
| | | | | | 9 | G Pérez Roldán | 6 | 6 | | | | | | | | | | |
| | U Riglewski | 5 | 4 | | | S Bruguera | 2 | 4 | | | | | | | | | | |
| | S Bruguera | 7 | 6 | | | | | | 9 | G Pérez Roldán | 6 | 6 | | | | | | |
| | G Prpić | 7 | 7 | | | | | | | G Prpić | 4 | 3 | | | | | | |
| | F Clavet | 6 | 5 | | | G Prpić | 6 | 7 | | | | | | | | | | |
| | | | | | 8 | G Forget | 2 | 6 | | | | | | | | | | |

#### 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 | Quarterfinals |
| | | | | | 4 | M Jaite | 5 | 7 | 1 | | | | | | | | | | |
| | K Nováček | 6 | 6 | | | K Nováček | 7 | 6 | 6 | | | | | | | | | | |
| | J Bates | 1 | 2 | | | | | | | | K Nováček | 5 | 6 | 4 | | | | | |
| | A Cherkasov | 6 | 5 | 6 | | | | | | | A Cherkasov | 7 | 3 | 6 | | | | | |
| | J Gunnarsson | 2 | 7 | 4 | | A Cherkasov | 7 | 6 | | | | | | | | | | | |
| | | | | | 13 | P Korda | 6 | 1 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | A Cherkasov | 6 | 4 | 4 |
| | | | | | | | | | | | | | | | 12 | H Leconte | 4 | 6 | 6 |
| | | | | | 12 | H Leconte | 6 | 6 | | | | | | | | | | | |
| Q | J Windahl | 4 | | | Q | J Windahl | 4 | 2 | | | | | | | | | | | |
| | A Antonitsch | 0$^r$ | | | | | | | | 12 | H Leconte | 7 | 6 | | | | | | |
| | JP Fleurian | 7 | 4 | 6 | | | | | | 5 | A Chesnokov | 5 | 3 | | | | | | |
| | J Yzaga | 5 | 6 | 7 | | J Yzaga | 3 | 3 | | | | | | | | | | | |
| | | | | | 5 | A Chesnokov | 6 | 6 | | | | | | | | | | | |

### Bottom half
#### Section 3

| 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 |
| | | | | | 6 | J Courier | 2 | 4 | | | | | | | | | | |
| | M Filippini | 6 | 7 | | | M Filippini | 6 | 6 | | | | | | | | | | |
| | R Agénor | 4 | 6 | | | | | | | | M Filippini | 6 | 6 | | | | | |
| | T Carbonell | 2 | 7 | 6 | | | | | | | T Carbonell | 2 | 4 | | | | | |
| Q | H Schwaier | 6 | 6 | 3 | | T Carbonell | 6 | 7 | | | | | | | | | | |
| | | | | | 11 | CU Steeb | 3 | 5 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | M Filippini | 6 | 2 |
| | | | | | | | | | | | | | | | 3 | E Sánchez | 7 | 6 |
| | | | | | 14 | M Rosset | 1 | 3 | | | | | | | | | | |
| Q | T Tulasne | 6 | 2 | 5 | | R Fromberg | 6 | 6 | | | | | | | | | | |
| | R Fromberg | 4 | 6 | 7 | | | | | | | R Fromberg | 3 | 6 | 2 | | | | |
| | P Haarhuis | 4 | 4 | | | | | | | 3 | E Sánchez | 6 | 2 | 6 | | | | |
| | J Wöhrmann | 6 | 6 | | | J Wöhrmann | 6 | 3 | 3 | | | | | | | | | |
| | | | | | 3 | E Sánchez | 4 | 6 | 6 | | | | | | | | | |

#### 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 7 | J Aguilera | 6 | 5 | | | | | | | | | | |
| | W Masur | 6 | 6 | 6 | | W Masur | 7 | 7 | | | | | | | | | | |
| | J Arrese | 7 | 4 | 3 | | | | | | | W Masur | 2 | 7 | 4 | | | | |
| Q | R Vogel | 6 | 2 | | | | | | | 10 | G Ivanišević | 6 | 6 | 6 | | | | |
| | J Sánchez | 7 | 6 | | | J Sánchez | 2 | 3 | | | | | | | | | | |
| | | | | | 10 | G Ivanišević | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 10 | G Ivanišević | 6 | 6 |
| | | | | | | | | | | | | | | | WC | E Jelen | 2 | 3 |
| | | | | | 15 | M Wilander | 1 | 6 | 2 | | | | | | | | | |
| WC | C Bergström | 7 | 2 | 4 | | F Davín | 6 | 4 | 6 | | | | | | | | | |
| | F Davín | 5 | 6 | 6 | | | | | | | F Davín | 6 | 6$^2$ | 3 | | | | |
| WC | E Jelen | 6 | 6 | 7 | | | | | | WC | E Jelen | 4 | 7$^7$ | 6 | | | | |
| Q | O Delaître | 7 | 1 | 5 | WC | E Jelen | 4 | 6 | 2 | | | | | | | | | |
| | | | | | 2 | T Muster | 6 | 2 | 0$^r$ | | | | | | | | | |