michael phelps
The one that was the most successful.
One competitor in the Winter Olympics
Badminton
swimming
14
You have to go to the olympic trials and be a top competitor.
koroipos of elias
birgit fischier.
Brazil
Vladimir Samsonov was the most successful European ping pong player at the Beijing Olympics. He is from Belarus that is located in Europes' Eastern block.
Rosalynn Sumners was her main competitor!
Gymnastics requires the competitor to be turning 16 in the year of the Olympics. Figure skating requires the competitor to be turning 15. Other than those two events, there are no age limits.