'Majestic' Rudisha wins 800m gold

Watch Olympic champion David Rudisha hold off all challengers to win a tactical men's 800m final at the World Athletics Championships.

The Kenyan ran a slow first lap of 54.15 seconds, but fended off eventual silver-medallist Adam Kszczot of Poland and third-placed Amel Tuka of Bosnia-Herzegovina, to win in 1:45.84.

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