Ian Thorpe
19.30
Yohan Blake Jamaica (JAM)
Usain Bolt Jamaica (JAM)
Carmelita Jeter United States (USA)
Allyson Felix United States (USA)
Athletes from over 200 different countries will be participating in the 2012 summer Olympics
Usian Bolt.
Shelly-Ann Fraser-Pryce Jamaica (JAM)
19:19
200
200