Diamond League athletics: David Rudisha wins 800m

Olympic champion David Rudisha wins the 800m at the opening Diamond League meet of the season in Doha.

Jamaica's Shelley-Ann Fraser-Pryce, a double gold medallist at London 2012, wins the women's 200m, with American Justin Gatlin taking the men's 100m.

Britain's Beijing Olympic champion Christine Ohuruogu could only finish third in the women's 400m, a race won by Botswana's Amantle Montsho.

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