China's Li Ting and Sun Tian Tian have beaten Spain's Conchita Martinez and Virginia Ruano Pascual to win the Olympic tennis women's doubles title.
The Chinese pair eased to a 6-3 6-3 victory in the face of a sub-standard performance from their opponents.
China took the initiative in the first set when they broke Spain in the eighth game to go 5-3 up.
They served out for the first set and then broke the Spanish four times in the second for a historic victory.
Both teams looked out of sorts in what was a scrappy doubles encounter.
Martinez and Ruano Pascual, who convincingly beat Japan's Shinobu Asagoe and Ai Sugiyama to reach the final, made a considerable number of uncharacteristic errors throughout the match.
Ruano Pascual, the joint number one doubles player in the world, was particularly poor at the net.
Her mistakes in the eighth game led to the Chinese taking the game to deuce.
Then Martinez's subsequent mishit handed their opponents the all-important break.
In the second set, the Spanish fought back to break the Chinese early on. They then broke their opponents again with the score at 5-2.
But Martinez and Ruano Pascual could not prevent the inevitable.
In the next game, Li and Sun broke the Spaniards for the fourth time in the set, with their gold medal point coming from an overhit forehand courtesy of the below-par Ruano Pascual.