Spain's Rafael Nadal and Marc Lopez won gold in the men's doubles in Rio.
They beat Romania's Florin Mergea and Horia Tecau 6-2 3-6 6-4.
Nadal is also through to the semi-finals of the men's singles after beating Thomasz Bellucci of Brazil in three sets and will face Juan Martin del Potro of Argentina.
Jack Sock and Steve Johnson of USA won the bronze medal with a 6-2 6-4 win over Daniel Nestor and Vasek Popisil of Canada.
Nadal, who won men's singles gold in Beijing in 2008, could face Britain's Andy Murray in the final.