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
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