Bolt back in search of 200 metres hat-trick

Usain Bolt returns to centre stage on Saturday and it seems only a catastrophic injury can prevent the Jamaican world record holder from securing a third successive world 200m title and completing another brilliant sprint double.

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Bolt leads a fearsome Jamaican trio in the final as they seek to repeat their podium sweep of the 2012 Olympics and claim a fourth sprint gold medal in Moscow after Shelly-Ann Fraser-Pryce completed the women's 100 and 200m double.

There could be a terrific race in the 100m hurdles as American breakthrough woman Brianna Rollins takes on Australia's Olympic champion Sally Pearson and there are finals in the women's high jump, men's javelin and women's 4x400m relay after the action kicks off with the men's marathon.

Photograph: Jamie Squire/Getty Images