Golden double and then a bolt from the blue in Beijing

Usain Bolt stormed to the World Championship sprint double at the World Athletics Championships when a runaway segway proved more problematic than Justin Gatlin. Four days on from riding to the rescue of his beleaguered sport in the 100 metres, the Jamaican attempted to make it four successive half-lap world crowns in Beijing.

Gatlin, cast as athletics’ number one villain, again stood in his way but once more failed to wrestle away gold as Bolt held strong down the home straight to win in a world-leading 19.55 secs.

The 29-year-old finished the 200m final an impressive 0.19 secs ahead of two-time drugs cheat Gatlin, whose comments in the build-up clearly irked the Jamaican sprint great.