# 1990 Stella Artois Indoor – Singles

Boris Becker was the defending champion, but did not take part that year. Ivan Lendl won the title, defeating Tim Mayotte 6–3, 6–2, in the final.

## Seeds

* Ivan Lendl (champion)
* John McEnroe (semifinals)
* Aaron Krickstein (second round)
* Yannick Noah (first round)
* Tim Mayotte (final)
* Jimmy Connors (first round)
* (withdrew)
* Jim Courier (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

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Ivan Lendl | 3 | 6 | 6 | | | | |
| | Pete Sampras | 6 | 0 | 3 | | | | |
| | Pete Sampras | 6 | 0 | 3 | 1 | Ivan Lendl | 6 | 6 |
| | | | | | 5 | Tim Mayotte | 3 | 2 |
| 5 | Tim Mayotte | 6 | 6 | | 5 | Tim Mayotte | 3 | 2 |
| 2 | John McEnroe | 4 | 4 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | I Lendl | 6 | 6 | | | | | | | | | | | | | | | | |
| WC | D Nargiso | 3 | 3 | | 1 | I Lendl | 6 | 2 | 6 | | | | | | | | | | |
| | A Volkov | 6 | 6 | | | A Volkov | 1 | 6 | 1 | | | | | | | | | | |
| Q | S Colombo | 1 | 4 | | | | | | | 1 | I Lendl | 6 | 6 | | | | | | |
| | J Potier | 4 | 4 | | | | | | | 8 | J Courier | 2 | 4 | | | | | | |
| | K Nováček | 6 | 6 | | | K Nováček | 4 | 4 | | | | | | | | | | | |
| | M Koevermans | 2 | 1 | | 8 | J Courier | 6 | 6 | | | | | | | | | | | |
| 8 | J Courier | 6 | 6 | | | | | | | | | | | | 1 | I Lendl | 3 | 6 | 6 |
| 3 | A Krickstein | 6 | 6 | | | | | | | | | | | | | P Sampras | 6 | 0 | 3 |
| | O Camporese | 4 | 3 | | 3 | A Krickstein | 2 | 3 | | | | | | | | | | | |
| WC | S Pescosolido | 5 | 2 | | | M Šrejber | 6 | 6 | | | | | | | | | | | |
| | M Šrejber | 7 | 6 | | | | | | | | M Šrejber | 7$^9$ | 4 | 4 | | | | | |
| | A Järryd | 1 | 3 | | | | | | | | P Sampras | 6$^7$ | 6 | 6 | | | | | |
| | P Sampras | 6 | 6 | | | P Sampras | 6 | 7$^7$ | | | | | | | | | | | |
| Q | M Zoecke | 6 | 4 | 7$^7$ | Q | M Zoecke | 1 | 6$^4$ | | | | | | | | | | | |
| 6 | J Connors | 3 | 6 | 6$^1$ | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | T Mayotte | 6 | 6 | | | | | | | | | | | | | | | |
| | M Střelba | 1 | 1 | | 5 | T Mayotte | 6 | 6 | | | | | | | | | | |
| Q | T Champion | 6 | 7$^7$ | | Q | T Champion | 2 | 1 | | | | | | | | | | |
| | P Korda | 4 | 6$^1$ | | | | | | | 5 | T Mayotte | 7 | 6$^2$ | 7 | | | | |
| | P Lundgren | 6$^6$ | 5 | | | | | | | | J Hlasek | 5 | 7$^7$ | 5 | | | | |
| | J Hlasek | 7$^8$ | 7 | | | J Hlasek | 6 | 3 | 6 | | | | | | | | | |
| | J Bates | 7 | 6 | | | J Bates | 3 | 6 | 3 | | | | | | | | | |
| 4/WC | Y Noah | 5 | 4 | | | | | | | | | | | | 5 | T Mayotte | 6 | 6 |
| | H Skoff | 6 | 6 | | | | | | | | | | | | 2 | J McEnroe | 4 | 4 |
| Q | P Pambianco | 2 | 2 | | | H Skoff | 6$^5$ | 5$^r$ | | | | | | | | | | |
| | P Haarhuis | 4 | 2 | | | E Jelen | 7$^7$ | 4 | | | | | | | | | | |
| | E Jelen | 6 | 6 | | | | | | | | E Jelen | 3 | 3 | | | | | |
| | B Orešar | 6$^3$ | 4 | | | | | | | 2 | J McEnroe | 6 | 6 | | | | | |
| | P Canè | 7$^7$ | 6 | | | P Canè | 4 | 1 | | | | | | | | | | |
| | A Cherkasov | 1 | 6 | 4 | 2 | J McEnroe | 6 | 6 | | | | | | | | | | |
| 2 | J McEnroe | 6 | 4 | 6 | | | | | | | | | | | | | | |