# 1975 Suisse Open Gstaad – Singles

The 1975 Suisse Open Gstaad – Singles was an event of the 1975 Suisse Open Gstaad tennis tournament and was played on outdoor red clay courts in Gstaad, Switzerland from 7 July until 13 July 1975. The draw comprised 32 players and two of them were seeded. Guillermo Vilas was the defending Swiss Open singles champion but lost in the semifinals. First-seeded Ken Rosewall won the title by defeating unseeded Karl Meiler in the final, 6–4, 6–4, 6–3.

## Seeds

* Ken Rosewall (champion)
* Guillermo Vilas (semifinals)

## 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 | Semifinals | Final | Final | Final | Final | Final |
| 1 | Ken Rosewall | 9 | 6 | 6 | | | | | | |
| | Jairo Velasco Sr. | 7 | 0 | 2 | | | | | | |
| | Jairo Velasco Sr. | 7 | 0 | 2 | | 1 | Ken Rosewall | 6 | 6 | 6 |
| | | | | | | | Karl Meiler | 4 | 4 | 3 |
| | Karl Meiler | 6 | 6 | 4 | 6 | | Karl Meiler | 4 | 4 | 3 |
| 2 | Guillermo Vilas | 3 | 4 | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | Ken Rosewall | 6 | 6 | | | | | | | | | | | | | | | |
| | Bernard Mignot | 3 | 4 | | 1 | Ken Rosewall | 6 | 6 | | | | | | | | | | |
| | Nikola Špear | 4 | 4 | | | Carlos Kirmayr | 3 | 3 | | | | | | | | | | |
| | Carlos Kirmayr | 6 | 6 | | | | | | | 1 | Ken Rosewall | 7 | 6 | | | | | |
| | Jeff Borowiak | 8 | 6 | | | | | | | | Jeff Borowiak | 5 | 4 | | | | | |
| | Hans-Joachim Plötz | 6 | 3 | | | Jeff Borowiak | 4 | 6 | 10 | | | | | | | | | |
| | Barry Phillips-Moore | 1 | 2 | | | Colin Dowdeswell | 6 | 3 | 8 | | | | | | | | | |
| | Colin Dowdeswell | 6 | 6 | | | | | | | | | | | 1 | Ken Rosewall | 9 | 6 | 6 |
| | John Alexander | 9 | 1 | 6 | | | | | | | | | | | Jairo Velasco Sr. | 7 | 0 | 2 |
| | Dick Dell | 7 | 6 | 1 | | John Alexander | 6 | 6 | 1 | | | | | | | | | |
| | Jairo Velasco Sr. | 6 | 6 | | | Jairo Velasco Sr. | 0 | 8 | 6 | | | | | | | | | |
| | Dimitri Sturdza | 4 | 1 | | | | | | | | Jairo Velasco Sr. | 6 | 6 | | | | | |
| | Hans-Jürgen Pohmann | 4 | 6 | 5 | | | | | | | Iván Molina | 0 | 1 | | | | | |
| | Gerald Battrick | 6 | 1 | 7 | | Gerald Battrick | 1 | 1 | | | | | | | | | | |
| | Iván Molina | 7 | 6 | | | Iván Molina | 6 | 6 | | | | | | | | | | |
| | Toshiro Sakai | 5 | 1 | | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals |
| | Humphrey Hose | 1 | 2 | | | | | | | | | | | | | | | | |
| | Jean-François Caujolle | 6 | 6 | | | Jean-François Caujolle | 5 | 3 | | | | | | | | | | | |
| | Tito Vázquez | 4 | 3 | | | Karl Meiler | 7 | 6 | | | | | | | | | | | |
| | Karl Meiler | 6 | 6 | | | | | | | | Karl Meiler | 4 | 6 | 10 | | | | | |
| | Graham Stilwell | 3 | 6 | 6 | | | | | | | Marcello Lara | 6 | 0 | 8 | | | | | |
| | Marcello Lara | 6 | 4 | 8 | | Marcello Lara | 8 | 2 | 6 | | | | | | | | | | |
| | Elio Lito Alvarez | 6 | 6 | 8 | | Roger Taylor | 6 | 6 | 0 | | | | | | | | | | |
| | Roger Taylor | 8 | 2 | 10 | | | | | | | | | | | | Karl Meiler | 6 | 6 | 4 |
| | Rick Fisher | 4 | 2 | | | | | | | | | | | | 2 | Guillermo Vilas | 3 | 4 | 6 |
| | Nikola Pilić | 6 | 6 | | | Nikola Pilić | 1 | 6 | 6 | | | | | | | | | | |
| | Joaquín Loyo-Mayo | 2 | 1 | | | Jürgen Fassbender | 6 | 3 | 4 | | | | | | | | | | |
| | Jürgen Fassbender | 6 | 6 | | | | | | | | Nikola Pilić | 2 | 9 | 5 | | | | | |
| | Petr Kanderal | 6 | 5 | 1 | | | | | | 2 | Guillermo Vilas | 6 | 8 | 7 | | | | | |
| | Jun Kuki | 3 | 7 | 6 | | Jun Kuki | 5 | 0 | | | | | | | | | | | |
| | Kenichi Hirai | 2 | 4 | | 2 | Guillermo Vilas | 7 | 6 | | | | | | | | | | | |
| 2 | Guillermo Vilas | 6 | 6 | | | | | | | | | | | | | | | | |