After his jaw-dropping, gold medal-winning, world record-breaking performance in the 100 metres on Saturday, Usain Bolt produced a similar sensational run in the 200 metres final today.

All eyes were on the newest Olympic legend during the pre-race build-up (even the single British finalist, Christian Malcolm, was considered a side-show by his country's extremely patriotic television presenters). The favourite for the race produced the goods, and the display that the 91,000 in the Beijing 'Bird's Nest' had flocked to see. Again.

Winning gold in the 100m was considered as just a 'bonus' by Bolt. The 200m is his speciality – he came to China in search of Olympic 200m gold. You could tell. Lambasted by some for his open-armed, chest-patting finish in the showcase event at the weekend, Bolt ran through the line this time. He wanted gold. He wanted the world record. He got them both. Again.

Michael Johnson's 12-year-old world record was shattered. Bolt recorded a time of 19.30 seconds. There is now a new gold spike-wearing man in town. He blew away his fellow competitors. Netherands Antilles' Churundy Martina came in over half a second behind Bolt, with America's Wallace Spearmon third, but both were disqualified for running out of their lanes.

As Jamaica's sprinting star jigged a victory dance, Johnson, the man whose record he broke, described Bolt's display as "an incredible performance, just incredible". Other finalists admitted to being "shocked" by the giant Jamaican's stunning exploits. The man himself said he "wanted to leave everything on the track". He certainly did that.

The race demonstrated his phenomenal raw power, with his enormous strides gulping up the track in front of him. Bolt is, simply put, a man built for devastating speed. These Olympic Games will forever be associated with Usain Bolt, and I feel extremely privileged to have witnessed these performances from the fastest man ever.