The world's fastest man narrowly escaped serious injury after winning the 200 metres title in Beijing on Thursday.  While celebrating his fourth straight 200m title, Jamaica's Usain Bolt was swept off his feet after a cameraman lost control of his segway and plowed into the 29-year-old's lower legs.

Bolt appeared to shake off the accident by doing a revers summersault and getting back to his feet.

Bolt ran the fastest time of the year in 19.55 seconds to win the world 200 metres title for a record fourth time and sweep the individual sprints at a major global championships for a fifth time on Thursday.

Five days after beating Justin Gatlin to win the 100 metres, the 29-year-old Olympic champion and world record holder again proved too strong for the in-form American, who finished second in 19.74 seconds.

Anasco Jobodwana took bronze in 19.87 for South Africa.

The victory gave Bolt a record-extending 10th world championship gold medal and he could yet win an 11th as part of Jamaica's 4x100 metre relay team on Saturday.