14 July 2012 Last updated at 18:40

London Grand Prix: Sayers breaks GB javelin record

Great Britain's Goldie Sayers breaks her own national record to beat a top-class javelin field at the London Grand Prix.

Her first round throw of 66.17 metres was enough to beat reigning Olympic champion Barbora Spotakova and world number one Sunette Viljoen, who finished second and fourth respectively.

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