Katherine Grainger wins first gold after claiming silver in previous three games . Eric Murray and Andrew Bond power to victory in men 's pairs for New Zealand . Fellow Kiwi Mahe ##u clinches gold in men 's single rowing . Germany ease to victory in women 's quadruple sculls from Germany and Australia .
Katherine Grainger wins first gold after claiming silver in previous three Olympics . Eric Murray and Hamish Bond power to victory in men 's pairs for New Zealand . Fellow Kiwi Mahe Drysdale clinches gold in men 's single sculls . Germany ease to victory in men 's quadruple sculls from Croatia and Australia .