# 1973 Dutch Open – Men's singles

The 1973 Dutch Open – Men's singles was an event of the 1973 Dutch Open tennis tournament played on outdoor clay courts in Hilversum, Netherlands between 16 July and 22 July 1973. John Cooper was the defending champion, but did not compete in this edition. Tom Okker won the singles title, defeating Andrés Gimeno in the final 2–6, 6–4, 6–4, 6–7, 6–3.

## 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 | Final |
| Tom Okker | 6 | 7 | 7 | | | | | | | |
| Allan Stone | 2 | 6 | 6 | | | | | | | |
| Allan Stone | 2 | 6 | 6 | | Tom Okker | 2 | 6 | 6 | 6 | 6 |
| | | | | | Andrés Gimeno | 6 | 4 | 4 | 7 | 3 |
| Andrés Gimeno | 6 | 4 | 6 | 6 | Andrés Gimeno | 6 | 4 | 4 | 7 | 3 |
| Geoff Masters | 1 | 6 | 1 | 2 | | | | | | |

### Top half

| First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| Tom Okker | 6 | 6 | | | | | | | | | | | | |
| Rolf Spitzer | 3 | 3 | | Tom Okker | 6 | 6 | | | | | | | | |
| John Lloyd | 6 | 6 | | John Lloyd | 1 | 2 | | | | | | | | |
| János Benyik | 4 | 4 | | | | | | Tom Okker | 7 | 6 | | | | |
| Ross Case | 3 | 6 | 8 | | | | | Wanaro N'Godrella | 6 | 1 | | | | |
| Louk Sanders | 6 | 3 | 6 | Ross Case | 0 | 4 | | | | | | | | |
| Wanaro N'Godrella | 6 | 6 | | Wanaro N'Godrella | 6 | 6 | | | | | | | | |
| Marian Laudin | 4 | 4 | | | | | | | | | Tom Okker | 6 | 7 | 7 |
| Antonio Muñoz | 1 | 7 | 3 | | | | | | | | Allan Stone | 2 | 6 | 6 |
| Bertalan Csoknyai | 6 | 5 | 6 | Bertalan Csoknyai | 3 | 3 | | | | | | | | |
| Georges Goven | 3 | 6 | 5 | Attila Korpás | 6 | 6 | | | | | | | | |
| Attila Korpás | 6 | 3 | 7 | | | | | Attila Korpás | 6 | 0 | | | | |
| Allan Stone | 6 | 0 | 6 | | | | | Allan Stone | 7 | 6 | | | | |
| Jun Kuki | 4 | 6 | 2 | Allan Stone | 2 | 6 | 6 | | | | | | | |
| Jaime Pinto Bravo | 6 | 6 | | Jaime Pinto Bravo | 6 | 4 | 4 | | | | | | | |
| Rolf Thung | 4 | 3 | | | | | | | | | | | | |

### Bottom half

| First Round | First Round | First Round | First Round | Second Round | Second Round | Second Round | Second Round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| Andrés Gimeno | 6 | 6 | | | | | | | | | | | | | |
| Pat Cramer | 3 | 3 | | Andrés Gimeno | 6 | 6 | | | | | | | | | |
| Jun Kamiwazumi | 4 | 4 | | Jean-Baptiste Chanfreau | 3 | 1 | | | | | | | | | |
| Jean-Baptiste Chanfreau | 6 | 6 | | | | | | Andrés Gimeno | 4 | 6 | 6 | | | | |
| Bob Maud | 4 | 6 | 1 | | | | | Ian Fletcher | 6 | 3 | 0 | | | | |
| Tom Christensen | 6 | 3 | 6 | Tom Christensen | 1 | 2 | | | | | | | | | |
| Ian Fletcher | 6 | 6 | | Ian Fletcher | 6 | 6 | | | | | | | | | |
| Fred Hemmes Sr. | 3 | 0 | | | | | | | | | | Andrés Gimeno | 6 | 4 | 6 |
| Geoff Masters | 3 | 6 | 6 | | | | | | | | | Geoff Masters | 1 | 6 | 1 |
| Anand Amritraj | 6 | 0 | 2 | Geoff Masters | 6 | 6 | | | | | | | | | |
| Stephen Warboys | 3 | 4 | | Jan Hordijk | 1 | 2 | | | | | | | | | |
| Jan Hordijk | 6 | 6 | | | | | | Geoff Masters | 6 | 6 | | | | | |
| Vijay Amritraj | 6 | 6 | | | | | | Iván Molina | 1 | 2 | | | | | |
| Nick Fleury | 0 | 1 | | Vijay Amritraj | 5 | 6 | 4 | | | | | | | | |
| Iván Molina | 6 | 6 | | Iván Molina | 7 | 3 | 6 | | | | | | | | |
| Jean-François Caujolle | 3 | 1 | | | | | | | | | | | | | |