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London 2012 dressage: Zara Phillips makes Olympic debut
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Zara Phillips and her horse High Kingdom score 46.10 as they make their Olympic debut in the dressage.
Phillips was supported by her mother HRH Princess Anne, who competed at the Montreal Olympics in 1976 and Prince Phillip at Greenwich Park.
Watch the full session on the BBC Sport's Interactive Video Player.
Available to UK users only.
