Usain Bolt set his 100-metre world record of 9.58 seconds in 2009.
He ran the record on 16 August 2009 in the final of the 100 metres at the World Championships in Berlin, Germany. Bolt won ahead of American Tyson Gay, who ran 9.71 seconds, and fellow Jamaican Asafa Powell, who finished in 9.84 seconds. The race was completed with a legal tailwind of 0.9 metres per second.
The mark broke Bolt's own previous world record of 9.69 seconds, set at the 2008 Beijing Olympics. His improvement of 0.11 seconds was exceptionally large for a world record at that level. Bolt's 9.58 remains the men's 100-metre world record, while his 9.63 from the 2012 Olympics remains the Olympic record.
A frequent mix-up is choosing 2008 because Bolt first became the 100-metre world-record holder in Beijing that year. The question asks specifically about the faster 9.58-second record, which came one year later at the Berlin World Championships.