# 1973 Australian Open – Men's singles

John Newcombe defeated Onny Parun in the final, 6–3, 6–7, 7–5, 6–1 to win the men's singles tennis title at the 1973 Australian Open. It was his fifth major singles title.
Ken Rosewall was the two-time defending champion, but lost in the second round to Karl Meiler.
The first round was best-of-three sets, and the rest of the tournament was best-of-five sets.

## Seeds

The seeded players are listed below. John Newcombe is the champion; others show the round in which they were eliminated.
* Ken Rosewall (second round)
* John Newcombe (champion)
* Mal Anderson (second round)
* Alex Metreveli (quarterfinals)
* Geoff Masters (third round)
* John Alexander (second round)
* Colin Dibley (second round)
* Allan Stone (third round)
* Barry Phillips-Moore (second round)
* Bob Carmichael (quarterfinals)
* Patrick Proisy (semifinals)
* Onny Parun (final)

## Draw
### Key

* Q = Qualifier

### Final eight

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Finals | Finals | Finals | Finals | Finals | Finals |
| | Karl Meiler | 7 | 6 | 6 | 7 | | | | | | | | | | | | | |
| | Wanaro N'Godrella | 6 | 7 | 3 | 6 | | | | | | | | | | | | | |
| | Wanaro N'Godrella | 6 | 7 | 3 | 6 | | | Karl Meiler | 6 | 3 | 5 | 1 | | | | | | |
| | | | | | | | 12 | Onny Parun | 2 | 6 | 7 | 6 | | | | | | |
| 4 | Alex Metreveli | 4 | 6 | 3 | 7 | 3 | 12 | Onny Parun | 2 | 6 | 7 | 6 | | | | | | |
| 12 | Onny Parun | 6 | 3 | 6 | 6 | 6 | | | | | | | | | | | | |
| 12 | Onny Parun | 6 | 3 | 6 | 6 | 6 | | | | | | | 12 | Onny Parun | 3 | 7 | 5 | 1 |
| | | | | | | | | | | | | | 2 | John Newcombe | 6 | 6 | 7 | 6 |
| 11 | Patrick Proisy | 6 | 3 | 6 | 7 | | | | | | | | | | | | | | 2 | John Newcombe | 6 | 6 | 7 | 6 |
| | John Cooper | 4 | 6 | 1 | 6 | | | | | | | | | | | | | |
| | John Cooper | 4 | 6 | 1 | 6 | | 11 | Patrick Proisy | 6 | 4 | 2 | | | | | | | |
| | | | | | | | 2 | John Newcombe | 7 | 6 | 6 | | | | | | | |
| 10 | Bob Carmichael | 4 | 6 | 3 | | | 2 | John Newcombe | 7 | 6 | 6 | | | | | | | |
| 2 | John Newcombe | 6 | 7 | 6 | | | | | | | | | | | | | | |

### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | K Rosewall | 2 | 3 | 2 | | | | | | | | | | | | | |
| | K Meiler | 5 | 6 | 6 | | K Meiler | 6 | 6 | 6 | | | | | | | | | | | | | |
| | J James | 7 | 3 | 4 | | | | | | | | K Meiler | 6 | 7 | 2 | 6 | | | | | | |
| | T Kakoulia | 7 | 7 | | | | | | | | | T Kakoulia | 3 | 6 | 6 | 3 | | | | | | |
| Q | R Machán | 6 | 6 | | | T Kakoulia | 6 | 6 | 3 | 6 | | | | | | | | | | | | |
| | S Ball | 7 | 6 | | | S Ball | 2 | 4 | 6 | 3 | | | | | | | | | | | | |
| | N Fraser | 5 | 2 | | | | | | | | | | | | | | | K Meiler | 7 | 6 | 6 | 7 |
| | | | | | | | | | | | | | | | | | | W N'Godrella | 6 | 7 | 3 | 6 |
| | | | | | 8 | A Stone | 6 | 6 | 6 | | | | | | | | | | | | | |
| Q | M Phillips | 6 | 6 | | Q | M Phillips | 1 | 4 | 4 | | | | | | | | | | | | | |
| | J Kuki | 3 | 4 | | | | | | | | 8 | A Stone | 6 | 5 | 4 | 7 | 4 | | | | | |
| | W N'Godrella | 6 | 6 | | | | | | | | | W N'Godrella | 3 | 7 | 6 | 5 | 6 | | | | | |
| | P Dent | 3 | 4 | | | W N'Godrella | 6 | 7 | 7 | | | | | | | | | | | | | |
| | F Sedgman | 4 | 6 | 2 | 9 | B Phillips-Moore | 4 | 6 | 6 | | | | | | | | | | | | | |
| 9 | B Phillips-Moore | 6 | 4 | 6 | | | | | | | | | | | | | | | | | | |

### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | A Metreveli | 6 | 4 | 6 | 6 | | | | | | | | | | | | | |
| Q | M Senior | 6 | 3 | 14 | Q | M Senior | 2 | 6 | 2 | 2 | | | | | | | | | | | | | |
| | K Warwick | 4 | 6 | 12 | | | | | | | 4 | A Metreveli | 4 | 6 | 6 | 7 | | | | | | | |
| | R Case | 6 | 6 | | | | | | | | | R Case | 6 | 4 | 2 | 5 | | | | | | | |
| Q | P Kronk | 4 | 3 | | | R Case | 6 | 3 | 6 | 6 | | | | | | | | | | | | | |
| | F Gebert | 7 | 4 | 6 | | F Gebert | 4 | 6 | 4 | 2 | | | | | | | | | | | | | |
| | A McDonald | 6 | 6 | 3 | | | | | | | | | | | | | 4 | A Metreveli | 4 | 6 | 3 | 7 | 3 |
| | | | | | | | | | | | | | | | | | 12 | O Parun | 6 | 3 | 6 | 6 | 6 |
| | | | | | 5 | G Masters | 6 | 6 | 6 | | | | | | | | | | | | | | |
| | H-J Plötz | 6 | 3 | 7 | | H-J Plötz | 2 | 3 | 1 | | | | | | | | | | | | | | |
| | J-F Caujolle | 0 | 6 | 5 | | | | | | | 5 | G Masters | 6 | 6 | 3 | 5 | | | | | | | |
| Q | C Kachel | 6 | 6 | | | | | | | | 12 | O Parun | 7 | 3 | 6 | 7 | | | | | | | |
| | W Bowrey | 2 | 3 | | Q | C Kachel | 1 | 2 | 2 | | | | | | | | | | | | | | |
| | H Kary | 4 | 6 | | 12 | O Parun | 6 | 6 | 6 | | | | | | | | | | | | | | |
| 12 | O Parun | 6 | 7 | | | | | | | | | | | | | | | | | | | | |

### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 11 | P Proisy | 7 | 3 | 6 | | | | | | | | | | | | | | | | | | | | |
| Q | W Durham | 6 | 6 | 3 | 11 | P Proisy | 6 | 6 | 6 | | | | | | | | | | | | | | | |
| | W Coghlan | 7 | 3 | 6 | | W Coghlan | 3 | 3 | 4 | | | | | | | | | | | | | | | |
| | J Kamiwazumi | 6 | 6 | 3 | | | | | | | | 11 | P Proisy | 7 | 4 | 7 | 6 | | | | | | | |
| | P Dominguez | 7 | 6 | | | | | | | | | | P Dominguez | 5 | 6 | 6 | 4 | | | | | | | |
| | B Taróczy | 6 | 3 | | | P Dominguez | 7 | 6 | 3 | 6 | 11 | | | | | | | | | | | | | |
| | | | | | 6 | J Alexander | 6 | 7 | 6 | 3 | 9 | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | 11 | P Proisy | 6 | 3 | 6 | 7 |
| | J Cooper | 6 | 6 | | | | | | | | | | | | | | | | | J Cooper | 4 | 6 | 1 | 6 |
| | D Crealy | 3 | 3 | | | J Cooper | 6 | 7 | 6 | | | | | | | | | | | | | | | |
| Q | G Thomson | 7 | 7 | | Q | G Thomson | 3 | 6 | 1 | | | | | | | | | | | | | | | |
| | T Bernasconi | 6 | 6 | | | | | | | | | | J Cooper | 7 | 6 | 4 | 6 | 13 | | | | | | |
| | B Giltinan | 6 | 6 | | | | | | | | | | B Giltinan | 5 | 2 | 6 | 7 | 11 | | | | | | |
| | R Casey | 1 | 2 | | | B Giltinan | 6 | 6 | 6 | 7 | | | | | | | | | | | | | | |
| | | | | | 3 | M Anderson | 7 | 2 | 2 | 6 | | | | | | | | | | | | | | |

### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 10 | B Carmichael | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | J Bartlett | 4 | 2 | | 10 | B Carmichael | 6 | 6 | 6 | 6 | | | | | | | | | | | | |
| | J Stephens | 6 | 3 | 8 | | J Stephens | 1 | 2 | 7 | 3 | | | | | | | | | | | | |
| Q | L Elvstrøm | 4 | 6 | 6 | | | | | | | 10 | B Carmichael | 6 | 6 | 2 | 1 | 6 | | | | | |
| | S Baranyi | 6 | 6 | 6 | | | | | | | | S Baranyi | 3 | 4 | 6 | 6 | 3 | | | | | |
| | C Stubs | 7 | 3 | 2 | | S Baranyi | 3 | 6 | 6 | 7 | | | | | | | | | | | | |
| | | | | | 7 | C Dibley | 6 | 3 | 3 | 6 | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | 10 | B Carmichael | 4 | 6 | 3 |
| | C Letcher | 6 | 7 | | | | | | | | | | | | | | | 2 | J Newcombe | 6 | 7 | 6 |
| | P Szőke | 1 | 5 | | | C Letcher | 3 | 2 | 7 | 6 | | | | | | | | | | | | |
| | G Goven | 6 | 7 | | | G Goven | 6 | 6 | 6 | 7 | | | | | | | | | | | | |
| | N Kelaidis | 2 | 6 | | | | | | | | | G Goven | 1 | 3 | 3 | | | | | | | |
| | J-L Haillet | 7 | 6 | | | | | | | | 2 | J Newcombe | 6 | 6 | 6 | | | | | | | |
| | G Perkins | 5 | 4 | | | J-L Haillet | 1 | 2 | 2 | | | | | | | | | | | | | |
| | | | | | 2 | J Newcombe | 6 | 6 | 6 | | | | | | | | | | | | | |