Usain Bolt is the first person simultaneously to hold both the 100 meter dash world record and the 200 meter dash world record since fully automatic time became mandatory.
 Bolt took more than a tenth of a second off his previous best mark, and this was the largest-ever margin of improvement in the 100-m world record since the beginning of electronic timing
On 31 May 2008, Bolt set a new 100 m world record at the Reebok Grand Prix in the Icahn Stadium in New York City

