Russian world champions Anastasia Davydova and Anastasia Yermakova scored eight perfect 10s on their way to claiming the Olympic gold in the synchronised swimming duet.
The 21-year-old Russians led all three rounds to push Japan's Miya Tachibana and Miho Takeda into silver medal position again after the 2000 Sydney Games and the world championships last year. The Russians scored 99.334 points with the Japanese achieving
98.417.
The United States team of Alison Bartosik and Anna Kozlova took bronze after the free routine final with 96.918.
It is the second straight duet title for Russia after Olga Brusnikina and Maria Kisseleva won for the first time in Sydney four years ago.
Filed by Johnny Proby