Usain bolt is Extra-ordinary.

Usain Bolt guided Jamaica to victory in the sprint relay in Moscow to become the most successful athlete in the history of the World Championships.

The 26-year-old added 4x100m gold to his 100m and 200m triumphs and now has a total of eight golds and two silvers.

Americans Carl Lewis and Allyson Felix also have 10 medals each - eight golds, one silver and one bronze.

Jamaica won in 37.36 seconds with the United States second and Canada third after Great Britain were disqualified.

The 100m and 200m world record holder also secured a sprint triple in World Championships for the second time, matching the trebles he completed at the 2008 and 2012 Olympics.

"It is just great," Bolt said of the comparison. "I'll continue dominating. I'll continue to work hard. 

For me, my aim is to continue into the greatness thing."

This guy is nothing less than extraordinary. It's been a long time since I saw an athletic who enjoyed running, the last time was Edwin Moses, the 400m hurdles runner.

Usain Bolt achievement in World Championships. Just remarkable. ALL GOLD.

100m: 2008, 2012 Olympics; 2009, 2013 World Championships

200m: 2008, 2012 Olympics; 2009, 2011, 2013 World Championships

4x100m: 2008, 2012 Olympics; 2009, 2011, 2013 World Championships