Yury Postrigay and Alexander Dyachenko of Russia won the Olympic gold medal Saturday in the men\'s kayaking doubles race over 200 meters. Raman Piatrushenka and Vadzim Makhneu of Belarus were winners of the silver medal. The bronze went to Liam Heath and Jon Schofield of Britain. The race concluded two weeks of Olympic rowing and canoe-kayak competition at the man-made facility near Eton College west of London.