# 1990 Australian Men's Hardcourt Championships – Singles

Mark Woodforde was the defending champion but lost in the first round to Jimmy Arias.
Thomas Muster won in the final 3–6, 6–2, 7–5 against Arias.

## Seeds

* Sergi Bruguera (semifinals)
* Goran Ivanišević (first round)
* Thomas Muster (champion)
* Alexander Volkov (second round)
* Paul Annacone (second round)
* Mark Koevermans (quarterfinals)
* Michiel Schapers (second round)
* Marc Rosset (second 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
* NG = Next Gen Accelerator Program entrant

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Sergi Bruguera | 6 | 2 | 6$^1$ | | | | | |
| 3 | Thomas Muster | 2 | 6 | 7$^7$ | | | | | |
| 3 | Thomas Muster | 2 | 6 | 7$^7$ | 3 | Thomas Muster | 3 | 6 | 7 |
| | | | | | | Jimmy Arias | 6 | 2 | 5 |
| | Jimmy Arias | 6 | 6 | | | Jimmy Arias | 6 | 2 | 5 |
| | Jean-Philippe Fleurian | 3 | 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 | S Bruguera | 7$^7$ | 6 | | | | | | | | | | | | | | | | |
| Q | P Henricsson | 6$^4$ | 2 | | 1 | S Bruguera | 6$^3$ | 6 | 6 | | | | | | | | | | |
| WC | B Dyke | 6 | 6 | | WC | B Dyke | 7$^7$ | 2 | 3 | | | | | | | | | | |
| | G Muller | 4 | 4 | | | | | | | 1 | S Bruguera | 6$^2$ | 6 | 6 | | | | | |
| | M Stich | 6 | 6 | | | | | | | | M Stich | 7$^7$ | 0 | 4 | | | | | |
| | N Kroon | 4 | 3 | | | M Stich | 6 | 6 | | | | | | | | | | | |
| | P Korda | 3 | 4 | | 7 | M Schapers | 4 | 3 | | | | | | | | | | | |
| 7 | M Schapers | 6 | 6 | | | | | | | | | | | | 1 | S Bruguera | 6 | 2 | 6$^1$ |
| 3 | T Muster | 6 | 4 | 6 | | | | | | | | | | | 3 | T Muster | 2 | 6 | 7$^7$ |
| | C Pistolesi | 4 | 6 | 3 | 3 | T Muster | 6 | 7$^7$ | | | | | | | | | | | |
| | J Fitzgerald | 3 | 7 | 6 | | J Fitzgerald | 2 | 6$^3$ | | | | | | | | | | | |
| Q | X Daufresne | 6 | 5 | 2 | | | | | | 3 | T Muster | 7 | 6 | | | | | | |
| | J Stoltenberg | 7 | 3 | r | | | | | | WC | M Kratzmann | 5 | 4 | | | | | | |
| WC | M Kratzmann | 5 | 4 | | WC | M Kratzmann | 6 | 6 | | | | | | | | | | | |
| | B Orešar | 1 | 4 | | 5 | P Annacone | 4 | 4 | | | | | | | | | | | |
| 5 | P Annacone | 6 | 6 | | | | | | | | | | | | | | | | |

### 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 |
| 6 | M Koevermans | 6 | 6 | | | | | | | | | | | | | | |
| Q | A Mronz | 1 | 4 | | 6 | M Koevermans | 6 | 3 | 6 | | | | | | | | |
| | P Haarhuis | 3 | 6 | 6$^5$ | | P Kühnen | 3 | 6 | 1 | | | | | | | | |
| | P Kühnen | 6 | 2 | 7$^7$ | | | | | | 6 | M Koevermans | 3 | 4 | | | | |
| | M Woodforde | 6$^7$ | 3 | | | | | | | | J Arias | 6 | 6 | | | | |
| | J Arias | 7$^9$ | 6 | | | J Arias | 6 | 7$^8$ | | | | | | | | | |
| WC | T Woodbridge | 4 | 6 | 4 | 4 | A Volkov | 4 | 6$^6$ | | | | | | | | | |
| 4 | A Volkov | 6 | 1 | 6 | | | | | | | | | | | J Arias | 6 | 6 |
| 8 | M Rosset | 6 | 6 | | | | | | | | | | | | J-P Fleurian | 3 | 4 |
| | A Cherkasov | 2 | 4 | | 8 | M Rosset | 4 | 4 | | | | | | | | | |
| | J Potier | 6 | 6 | | | J Potier | 6 | 6 | | | | | | | | | |
| | S Živojinović | 3 | 4 | | | | | | | | J Potier | 3 | 6 | 1 | | | |
| | J-P Fleurian | 6 | 6 | | | | | | | | J-P Fleurian | 6 | 3 | 6 | | | |
| | T Nijssen | 3 | 0 | | | J-P Fleurian | 6 | 6 | | | | | | | | | |
| Q | U Riglewski | 1 | 6 | 6 | Q | U Riglewski | 3 | 4 | | | | | | | | | |
| 2 | G Ivanišević | 6 | 3 | 1 | | | | | | | | | | | | | |