Tennis was first contested as a Summer Olympic sport in the 1896 Olympic Games, held in Athens. In the inaugural Olympic Games, only two tournaments were played: men's singles and men's doubles. Women were allowed to start to compete in singles and mixed doubles tennis events at the Olympic Games in 1900. Between 1928 and 1984, tennis was not included in the official Olympic program. Demonstration tennis events were, however, held twice, first in 1968 and later 1984. It was reinstated as a medal sport in 1988.