Usain Bolt
In 2009, at the World Championships in Berlin, Usain Bolt ran 100 meters in 9.58 seconds. Mathematicians hoped that such a result man would reach 25 years later. Today we are all wondering how long the result of a brilliant Jamaican will remain unbeatable. Two and a half months before the Beijing Olympics 2008 he broke the world record. One hundred meters ran in 9.72 seconds. "Bolt is a rookie who in the official competition ran 100 meters only for the fifth time in his career. His stunning time would one day make him a legend, but now he is a suspect" - wrote The Times.
I have found some website about the fastest people in the world and definitely you should read more about Usain Bolt there: http://www.9amj.webvis.co.za/usain.html .
It is also worth to spend some time and check all world athletics records here: https://www.iaaf.org/home