# 1990 Australian Indoor Championships – Singles

Ivan Lendl was the defending champion but lost in the semifinals to Stefan Edberg.
Boris Becker won in the final 7–6$^{(7–4)}$, 6–4, 6–4 against Edberg.

## Seeds

All sixteen seeds received a bye to the second round.
* Stefan Edberg (final)
* Boris Becker (champion)
* Ivan Lendl (semifinals)
* Brad Gilbert (second round)
* Aaron Krickstein (second round)
* Michael Chang (third round)
* Richard Fromberg (second round)
* Richey Reneberg (quarterfinals)
* David Wheaton (quarterfinals)
* Wally Masur (third round)
* Carl-Uwe Steeb (second round)
* Derrick Rostagno (second round)
* Darren Cahill (second round)
* Jim Grabb (second round)
* Mark Kratzmann (third round)
* Kelly Evernden (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

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Stefan Edberg | 3 | 7$^7$ | 6 | | | | | |
| 3 | Ivan Lendl | 6 | 6$^4$ | 3 | | | | | |
| 3 | Ivan Lendl | 6 | 6$^4$ | 3 | 1 | Stefan Edberg | 6$^4$ | 4 | 4 |
| | | | | | 2 | Boris Becker | 7$^7$ | 6 | 6 |
| | Todd Woodbridge | 5 | 4 | | 2 | Boris Becker | 7$^7$ | 6 | 6 |
| 2 | Boris Becker | 7 | 6 | | | | | | |

### Top half
#### Section 1

| 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 | S Edberg | 6 | 6 | | | | | | | | | | |
| WC | L-A Wahlgren | 3 | 3 | | N Kroon | 3 | 2 | | | | | | | | | | |
| | N Kroon | 6 | 6 | | | | | | 1 | S Edberg | 6 | 7 | | | | | |
| Q | S Youl | 6 | 6 | | | | | | 15 | M Kratzmann | 2 | 6 | | | | | |
| | T Högstedt | 1 | 4 | Q | S Youl | 3 | 6 | 3 | | | | | | | | | |
| | | | | 15 | M Kratzmann | 6 | 3 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 1 | S Edberg | 6 | 7 |
| | | | | | | | | | | | | | | 9 | D Wheaton | 2 | 6 |
| | | | | 9 | D Wheaton | 4 | 6 | 6 | | | | | | | | | |
| | P Chamberlin | 3 | 3 | Q | S Stolle | 6 | 0 | 2 | | | | | | | | | |
| Q | S Stolle | 6 | 6 | | | | | | 9 | D Wheaton | 7 | 3 | 6 | | | | |
| | P Kühnen | 6 | 6 | | | | | | | P Kühnen | 5 | 6 | 3 | | | | |
| | E Jelen | 3 | 0 | | P Kühnen | 7 | 6 | | | | | | | | | | |
| | | | | 7 | R Fromberg | 6 | 2 | | | | | | | | | | |

#### 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 |
| | | | | | 3 | I Lendl | 6 | 3 | 6 | | | | | | | | | |
| | A Rahunen | 6 | 6 | | | A Rahunen | 0 | 6 | 3 | | | | | | | | | |
| | J Stoltenberg | 4 | 4 | | | | | | | 3 | I Lendl | 7 | 4 | 6 | | | | |
| | S Davis | 6 | 6 | 6 | | | | | | | S Davis | 6 | 6 | 3 | | | | |
| Q | S Matsuoka | 7 | 3 | 4 | | S Davis | 3 | 6 | 6 | | | | | | | | | |
| | | | | | 14 | J Grabb | 6 | 3 | 3 | | | | | | | | | |
| | | | | | | | | | | | | | | | 3 | I Lendl | 6 | 7 |
| | | | | | | | | | | | | | | | | P Lundgren | 2 | 6 |
| | | | | | 11 | C-U Steeb | 5 | 3 | | | | | | | | | | |
| | P Lundgren | 6 | 6 | | | P Lundgren | 7 | 6 | | | | | | | | | | |
| | D Goldie | 2 | 4 | | | | | | | | P Lundgren | 6 | 6 | | | | | |
| Q | T Nelson | 3 | 6 | 4 | | | | | | 6 | M Chang | 2 | 4 | | | | | |
| | T Witsken | 6 | 2 | 6 | | T Witsken | 6 | 1 | 4 | | | | | | | | | |
| | | | | | 6 | M Chang | 4 | 6 | 6 | | | | | | | | | |

### Bottom half
#### Section 3

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | A Krickstein | 6 | 0 | | | | | | | | |
| | G Connell | 7 | 6 | | | G Connell | 7 | 6 | | | | | | | | |
| Q | C Eagle | 6 | 4 | | | | | | G Connell | 5 | 7 | 6 | | | | |
| | P Haarhuis | 6 | 6 | 6 | | | | | P Haarhuis | 7 | 5 | 4 | | | | |
| | A Järryd | 7 | 2 | 3 | | P Haarhuis | 7 | 6 | | | | | | | | |
| | | | | | 12 | D Rostagno | 6 | 4 | | | | | | | | |
| | | | | | | | | | | | | | G Connell | 6 | 6 | 1 |
| | | | | | | | | | | | | | T Woodbridge | 7 | 2 | 6 |
| | | | | | 13 | D Cahill | 4 | 1 | | | | | | | | |
| | B Pearce | 2 | 6 | 7 | | B Pearce | 6 | 6 | | | | | | | | |
| Q | D Engel | 6 | 1 | 5 | | | | | B Pearce | 3 | 6 | 3 | | | | |
| | K Jones | 4 | 0 | | | | | | T Woodbridge | 6 | 4 | 6 | | | | |
| | T Woodbridge | 6 | 6 | | | T Woodbridge | 7 | 6 | | | | | | | | |
| | | | | | 4 | B Gilbert | 6 | 3 | | | | | | | | |

#### 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 | R Reneberg | 6 | 6 | | | | | | | | | |
| | D Pate | 6 | 6 | | | D Pate | 2 | 3 | | | | | | | | | |
| | B Shelton | 2 | 3 | | | | | | | 8 | R Reneberg | 7 | 6 | | | | |
| WC | J Fitzgerald | 7 | 6 | 2 | | | | | | 10 | W Masur | 5 | 3 | | | | |
| | P Cash | 6 | 7 | 6 | | P Cash | 6 | 4 | 3 | | | | | | | | |
| | | | | | 10 | W Masur | 4 | 6 | 6 | | | | | | | | |
| | | | | | | | | | | | | | | 8 | R Reneberg | 4 | 4 |
| | | | | | | | | | | | | | | 2 | B Becker | 6 | 6 |
| | | | | | 16 | K Evernden | 6 | 2 | 7 | | | | | | | | |
| | J Rive | 7 | 6 | | | J Rive | 3 | 6 | 6 | | | | | | | | |
| WC | J Anderson | 6 | 3 | | | | | | | 16 | K Evernden | 4 | 3 | | | | |
| WC | M Wilander | 6 | 6 | | | | | | | 2 | B Becker | 6 | 6 | | | | |
| | M Woodforde | 3 | 4 | | WC | M Wilander | 2 | 5 | | | | | | | | | |
| | | | | | 2 | B Becker | 6 | 7 | | | | | | | | | |