They have fancy cameras that sense the runners as they pass the line in front of the camera and it was triggered to start timing electronically through the trigger of the starting gun.
Half 2
Maurice Greene with a time of 9.87.
it was yesterday if you paid attention
Sally pearson does the 100m hurdles and the 100m sprint
1896, the first modern Olympics.
Lindy Remigino won the gold metal for the United States for the 100m in the 1952 Summer Olympics.
Annegret Richter of West Germany in a time of 11.08 seconds.
it was shelly an fraser she won with 10.78 sec.
usan bolt
usain bolt
9.69secs done at the 2008 Beijing Olympics
Usain Bolt won the 100m final at Beijing