# 1990 Philips Austrian Open – Singles

Emilio Sánchez was the defending champion, but lost in the semifinal to Horacio de la Peña.
De la Peña won the title, by defeating Karel Nováček 6–4, 7–6$^{(7–4)}$, 2–6, 6–2 in the final.

## Seeds

All seeds received a bye to the second round.
* Boris Becker (quarterfinals)
* Brad Gilbert (second round)
* Emilio Sánchez (semifinals)
* Thomas Muster (quarterfinals)
* Marc Rosset (third round)
* Horst Skoff (semifinals)
* Karel Nováček (final)
* Sergi Bruguera (quarterfinals)
* Javier Sánchez (third round)
* Alex Antonitsch (third round)
* Andrei Cherkasov (quarterfinals)
* Tomás Carbonell (third round)
* Udo Riglewski (third round)
* Marián Vajda (third round)
* Martin Střelba (third round)
* David Engel (third round)

## 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final | |
| 1 | Boris Becker | 3 | 3 | | | | | | | | | | | | |
| 7 | Karel Nováček | 6 | 6 | | | | | | | | | | | | |
| 7 | Karel Nováček | 6 | 6 | 7 | Karel Nováček | 6 | 4 | 6 | | | | | | | |
| | | | | 6 | Horst Skoff | 4 | 6 | 4 | | | | | | | |
| 4 | Thomas Muster | 4 | 2 | 6 | Horst Skoff | 4 | 6 | 4 | | | | | | | |
| 6 | Horst Skoff | 6 | 6 | | | | | | | | | | | | |
| 6 | Horst Skoff | 6 | 6 | | | | | | 7 | Karel Nováček | 4 | 6$^4$ | 6 | 2 | |
| | | | | | | | | | | Horacio de la Peña | 6 | 7$^7$ | 2 | 6 | |
| 11 | Andrei Cherkasov | 1 | 4 | | | | | | | | | | | | Horacio de la Peña | 6 | 7$^7$ | 2 | 6 |
| 3 | Emilio Sánchez | 6 | 6 | | | | | | | | | | | | |
| 3 | Emilio Sánchez | 6 | 6 | 3 | Emilio Sánchez | 5 | 6$^5$ | | | | | | | | |
| | | | | | Horacio de la Peña | 7 | 7$^7$ | | | | | | | | |
| 8 | Sergi Bruguera | 4 | 1 | | Horacio de la Peña | 7 | 7$^7$ | | | | | | | | |
| | Horacio de la Peña | 6 | 6 | | | | | | | | | | | | |

### Top half
#### Section 1

| 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 |
| | | | | | 1 | B Becker | 6 | 6 | | | | | | | | | | |
| | C Pistolesi | 7 | 3 | 7 | | C Pistolesi | 2 | 1 | | | | | | | | | | |
| Q | B Stankovič | 6 | 6 | 6 | | | | | | 1 | B Becker | 6 | 4 | 6 | | | | |
| WC | G Mandl | 4 | 5 | | | | | | | 16 | D Engel | 4 | 6 | 0 | | | | |
| | P Baur | 6 | 7 | | | P Baur | 2 | 2 | | | | | | | | | | |
| | | | | | 16 | D Engel | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 1 | B Becker | 3 | 3 |
| | | | | | | | | | | | | | | | 7 | K Nováček | 6 | 6 |
| | | | | | 10 | A Antonitsch | 4 | 6 | 7 | | | | | | | | | |
| | G Raoux | 7 | 6 | 6 | | S Colombo | 6 | 3 | 6 | | | | | | | | | |
| | S Colombo | 6 | 7 | 7 | | | | | | 10 | A Antonitsch | 3 | 7 | 4 | | | | |
| | C Miniussi | 1 | 6 | 3 | | | | | | 7 | K Nováček | 6 | 6 | 6 | | | | |
| | M Cierro | 6 | 4 | 6 | | M Cierro | 4 | 4 | | | | | | | | | | |
| | | | | | 7 | K Nováček | 6 | 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | T Muster | 6 | 6 | | | | | | | | | |
| | F Luna | 6 | 6 | | | F Luna | 2 | 4 | | | | | | | | | |
| WC | T Buchmayer | 4 | 0 | | | | | | | 4 | T Muster | 6 | 6 | | | | |
| | S Guy | 6 | 4 | 1 | | | | | | 14 | M Vajda | 3 | 0 | | | | |
| Q | D Pescariu | 3 | 6 | 6 | Q | D Pescariu | 6 | 3 | | | | | | | | | |
| | | | | | 14 | M Vajda | 7 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 4 | T Muster | 4 | 2 |
| | | | | | | | | | | | | | | 6 | H Skoff | 6 | 6 |
| | | | | | 12 | T Carbonell | 6 | 6 | | | | | | | | | |
| | C Motta | 6 | 6 | | | C Motta | 2 | 3 | | | | | | | | | |
| SE | F Clavet | 3 | 4 | | | | | | | 12 | T Carbonell | 2 | 0 | | | | |
| | C Saceanu | 6 | 5 | 6 | | | | | | 6 | H Skoff | 6 | 6 | | | | |
| | P Vojtíšek | 2 | 7 | 4 | | C Saceanu | 6 | 5 | 6 | | | | | | | | |
| | | | | | 6 | H Skoff | 4 | 7 | 7 | | | | | | | | |

### 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | M Rosset | 6 | 6 | | | | | | | | | |
| | M Górriz | 3 | 6 | 1 | | M Sinner | 2 | 1 | | | | | | | | | |
| | M Sinner | 6 | 2 | 6 | | | | | | 5 | M Rosset | 3 | 3 | | | | |
| Q | M Ingaramo | 6 | 4 | | | | | | | 11 | A Cherkasov | 6 | 6 | | | | |
| | A Mronz | 7 | 6 | | | A Mronz | 2 | 4 | | | | | | | | | |
| | | | | | 11 | A Cherkasov | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 11 | A Cherkasov | 1 | 4 |
| | | | | | | | | | | | | | | 3 | E Sánchez | 6 | 6 |
| | | | | | 13 | U Riglewski | 6 | 6 | | | | | | | | | |
| | R Osterthun | 3 | 6 | 6 | | R Osterthun | 3 | 4 | | | | | | | | | |
| WC | O Fuchs | 6 | 3 | 4 | | | | | | 13 | U Riglewski | 3 | 6 | | | | |
| | P Ballauff | 3 | 2 | | | | | | | 3 | E Sánchez | 6 | 7 | | | | |
| | F Roig | 6 | 6 | | | F Roig | 2 | 6 | 5 | | | | | | | | |
| | | | | | 3 | E Sánchez | 6 | 0 | 7 | | | | | | | | |

#### 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | S Bruguera | 6 | 6 | | | | | | | | | |
| Q | R Argüello | 7 | 4 | 6 | | M Tauson | 3 | 3 | | | | | | | | | |
| | M Tauson | 6 | 6 | 7 | | | | | | 8 | S Bruguera | 6 | 6 | | | | |
| | N Borwick | 3 | 1 | | | | | | | 9 | J Sánchez | 3 | 2 | | | | |
| | C Costa | 6 | 6 | | | C Costa | 4 | 6 | 0 | | | | | | | | |
| | | | | | 9 | J Sánchez | 6 | 3 | 6 | | | | | | | | |
| | | | | | | | | | | | | | | 8 | S Bruguera | 4 | 1 |
| | | | | | | | | | | | | | | | H de la Peña | 6 | 6 |
| | | | | | 15 | M Střelba | 7 | 6 | | | | | | | | | |
| | B Orešar | 6 | 3 | | Q | G López | 6 | 2 | | | | | | | | | |
| Q | G López | 7 | 6 | | | | | | | 15 | M Střelba | 2 | 1 | | | | |
| Q | F Maciel | 2 | 6 | 1 | | | | | | | H de la Peña | 6 | 6 | | | | |
| | H de la Peña | 6 | 2 | 6 | | H de la Peña | 6 | 6 | | | | | | | | | |
| | | | | | 2/WC | B Gilbert | 2 | 4 | | | | | | | | | |