Worlds Fastest Human the start ( at top ) and the finnish ( bottom ) of the XVIII Olympiad men ' s 100 metres final . Bob Hayes ( right in both pictures ) getting away to a fast start and breaking the tapes to win a gold medal and tie the world record of 10 seconds flat . Others seen from left to right are USA ' s Mel Pender , Bahamas Tom Robinson , Wieslaw Maniak of Poland , Harry Jerome of Canada , Gaoussou Kone of Ivory Coast , Enrique Figuerola of Cuba and Heinz Schumann of Germany Regarded as the worlds fastest human 21 year old Hayes of Jacksonville , Fla , proved his rightto the title by running the first sub ten second 100 metres with 9 . 9 during todays semi final , but he was not officially credited with a world record because there was a wind velocity of 5 . 28 at his back 15th October 1964