From ducks on the rowing course to mystery gold medallists, here are 20 unbelievable but true facts about the Olympic Games. FifteenGreece, Australia, France, Great Britain and Switzerland are the only countries to have had representatives at every Summer Olympic Games. FourChina dominates the medals tables now but didn't win its first Olympic gold medal until 1984. Sixteen1932 women's 100m gold medallist Stella Walsh was shot dead in an armed robbery in 1980. SeventeenRomania's Nadia Comaneci was awarded the first 10 in a gymnastic event when she won gold in the uneven bars at Montreal in 1976.

Source: New Zealand Herald July 28, 2016 01:18 UTC