Football
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Léon Flameng won the 100 kilometer event, the first cycling event ever held at a modern Olympics, at the 1896 Games in Athens.
Olympics
The First Event to start at the 2008 Beijing Olympics was Football, which started 2 days before the Offical Opening Ceremony of the Olympic Games
1
Taekwondo.
In the modern Olympics, that was 1896.
1896 Olympics, the first one.
Political gymnastics
200 yard footrace
Trampolining
Tennis