Jamaica's Usain Bolt is officially the fastest man on the planet after setting a new 100m world record in New York.
Bolt, who's nickname is the 'Lightning Bolt', clocked up a time of 9.72 seconds, shaving 0.02 seconds off Asafa Powell's record, which was set in 2007.
Amazingly, it's only the fifth time the 21-year-old's competed in the 100m!
"I wasn't looking for a world record but it was there for the taking so I just went out there and ran my best race," he said.
Bolt usually concentrates on the 200m event and a few days ago was unsure if he would even take part in the 100m Jamaican Olympic trials.
But after the race he said he would definitely be running in both the 100m and 200m events in Beijing.
"I've just got to concentrate now and work on my 200 some more, because I haven't been doing a lot of 200 work," he said.