World Championships 2015: Nicholas Bett wins 400m hurdles

Kenya's Nicholas Bett claims the gold medal in the 400m hurdles with a world-leading time of 47.79 seconds in Beijing.

Russia's Denis Kudryavtsev took silver, running a national record of 48.05, with Jeffery Gibson of the Bahamas finishing third.

It was Kenya's first gold medal at a distance shorter than 800m.

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