# Tennis at the 1968 Summer Olympics – Demonstration men's singles

Since the 1968 Summer Olympics did not feature tennis as an official sport, two unofficial tournaments were held during the Games: a Demonstration tournament and an Exhibition tournament.
The Demonstration tournament was played from 14 to 20 October 1968 at three venues in Guadalajara, Mexico: Guadalajara Country Club, Atlas Sports Club and Guadalajara Sports Club; all of them featured clay courts. All matches were played at best-of-five sets; since the tiebreak rule was not implemented until the 1970s, a player had to win a set by a two-game margin in case of a 6–6 draw.
Spaniard Manuel Santana won the tournament by defeating his compatriot Manuel Orantes 2–6, 6–3, 3–6, 6–3, 6–4 in the final. American Herb Fitzgibbon won the third place.

## Seeds

* Manuel Santana (ESP) (champion, gold medalist)
* Herb Fitzgibbon (USA) (semifinals, bronze medalist)
* Joaquín Loyo Mayo (MEX) (quarterfinals)
* Juan Gisbert Sr. (ESP) (quarterfinals)
* Rafael Osuna (MEX) (semifinals, fourth place)
* Nicola Pietrangeli (ITA) (second round)
* Pierre Darmon (FRA) (second round)
* Jim Osborne (USA) (first round)

## Draw
### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final (gold-medal match) | Final (gold-medal match) | Final (gold-medal match) | Final (gold-medal match) | Final (gold-medal match) | Final (gold-medal match) | Final (gold-medal match) |
| 1 | Manuel Santana (ESP) | 6 | 6 | 6 | | | | | | | |
| 5 | Rafael Osuna (MEX) | 3 | 4 | 3 | | | | | | | |
| 5 | Rafael Osuna (MEX) | 3 | 4 | 3 | 1 | Manuel Santana (ESP) | 2 | 6 | 3 | 6 | 6 |
| | | | | | | Manuel Orantes (ESP) | 6 | 3 | 6 | 3 | 4 |
| | Manuel Orantes (ESP) | 6 | 6 | 6 | | Manuel Orantes (ESP) | 6 | 3 | 6 | 3 | 4 |
| 2 | Herb Fitzgibbon (USA) | 4 | 4 | 3 | Bronze-medal match | Bronze-medal match | Bronze-medal match | Bronze-medal match | Bronze-medal match | Bronze-medal match | Bronze-medal match |
| | | | | | 5 | Rafael Osuna (MEX) | 4 | 3 | 5 | | |
| | | | | | 2 | Herb Fitzgibbon (USA) | 6 | 6 | 7 | | |

### Top half

| First round | First round | 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 | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Santana (ESP) | 6 | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | H Camarotti (CUB) | 1 | 1 | 2 | | | 1 | M Santana (ESP) | 6 | 7 | 6 | | | | | | | | | | | | |
| | I Buding (FRG) | 6 | 2 | 4 | 2 | | | I Buding (FRG) | 3 | 5 | 4 | | | | | | | | | | | | |
| | J Kamiwazumi (JPN) | 4 | 6 | 6 | 2 | r | | | | | | 1 | M Santana (ESP) | 6 | 6 | 6 | | | | | | | |
| 8 | J Osborne (USA) | 3 | 5 | 3 | | | | | | | | | V Zarazúa (MEX) | 1 | 0 | 2 | | | | | | | |
| | J Ulrich (DEN) | 6 | 7 | 6 | | | | J Ulrich (DEN) | 4 | 1 | 1 | | | | | | | | | | | | |
| | V Zarazúa (MEX) | 7 | 6 | 0 | 6 | | | V Zarazúa (MEX) | 6 | 6 | 6 | | | | | | | | | | | | |
| | M di Domenico (ITA) | 5 | 4 | 6 | 2 | | | | | | | | | | | | | | 1 | M Santana (ESP) | 6 | 6 | 6 |
| 4 | J Gisbert Sr. (ESP) | 6 | 6 | 6 | | | | | | | | | | | | | | | 5 | R Osuna (MEX) | 3 | 4 | 3 |
| | Y Shretta (KEN) | 3 | 1 | 0 | | | 4 | J Gisbert Sr. (ESP) | 6 | 8 | 6 | | | | | | | | | | | | |
| | J McManus (USA) | 6 | 2 | 3 | 6 | 7 | | J McManus (USA) | 2 | 6 | 2 | | | | | | | | | | | | |
| | A Volkov (URS) | 2 | 6 | 6 | 4 | 5 | | | | | | 4 | J Gisbert Sr. (ESP) | 4 | 6 | 6 | 6 | 1 | | | | | |
| 5 | R Osuna (MEX) | 6 | 6 | 6 | | | | | | | | 5 | R Osuna (MEX) | 6 | 4 | 1 | 8 | 6 | | | | | |
| | S Pasarell (USA) | 3 | 2 | 2 | | | 5 | R Osuna (MEX) | 6 | 6 | 6 | | | | | | | | | | | | |
| | M Olvera (ECU) | 6 | 6 | 6 | | | | M Olvera (ECU) | 4 | 3 | 4 | | | | | | | | | | | | |
| | T Ortiz (PUR) | 1 | 0 | 0 | | | | | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | T Sakai (JPN) | 3 | 8 | 0 | | | | | | | | | | | | | | | | | | | |
| | M Orantes (ESP) | 6 | 10 | 6 | | | M Orantes (ESP) | 3 | 6 | 6 | 7 | | | | | | | | | | | | |
| | M Abdul-Aziz (KEN) | 1 | 3 | 2 | | 6 | N Pietrangeli (ITA) | 6 | 1 | 3 | 5 | | | | | | | | | | | | |
| 6 | N Pietrangeli (ITA) | 6 | 6 | 6 | | | | | | | | | | M Orantes (ESP) | 2 | 6 | 6 | 6 | | | | | |
| | J Fassbender (FRG) | 7 | 4 | 4 | 2 | | | | | | | | 3 | J Loyo Mayo (MEX) | 6 | 2 | 4 | 1 | | | | | |
| | T Kakulia (URS) | 5 | 6 | 6 | 6 | | T Kakulia (URS) | 7 | 1 | 3 | 7 | 3 | | | | | | | | | | | |
| | JM Brito (CUB) | 0 | 0 | 1 | | 3 | J Loyo Mayo (MEX) | 5 | 6 | 6 | 5 | 6 | | | | | | | | | | | |
| 3 | J Loyo Mayo (MEX) | 6 | 6 | 6 | | | | | | | | | | | | | | | | M Orantes (ESP) | 6 | 6 | 6 |
| | P Guzmán (ECU) | 8 | 5 | 2 | r | | | | | | | | | | | | | | 2 | H Fitzgibbon (USA) | 4 | 4 | 3 |
| | T Ulrich (DEN) | 6 | 7 | 5 | | | T Ulrich (DEN) | 6 | 2 | 6 | 1 | 7 | | | | | | | | | | | |
| | A Carrero (PUR) | 1 | 8 | 1 | | 7 | P Darmon (FRA) | 2 | 6 | 3 | 6 | 5 | | | | | | | | | | | |
| 7 | P Darmon (FRA) | 6 | 10 | 6 | | | | | | | | | | T Ulrich (DEN) | 3 | 2 | 1 | | | | | | |
| | V Korotkov (URS) | 4 | 2 | 2 | | | | | | | | | 2 | H Fitzgibbon (USA) | 6 | 6 | 6 | | | | | | |
| | E Castigliano (ITA) | 6 | 6 | 6 | | | E Castigliano (ITA) | 5 | 2 | 3 | | | | | | | | | | | | | |
| | H Nerell (SWE) | 6 | 4 | 3 | 5 | 2 | H Fitzgibbon (USA) | 7 | 6 | 6 | | | | | | | | | | | | | |
| 2 | H Fitzgibbon (USA) | 3 | 6 | 6 | 7 | | | | | | | | | | | | | | | | | | |