Milan - Serena Williams says she and her sister Venus are aiming to defend their Olympic doubles title in London next summer.
The sisters are targeting their third Olympic gold after triumphing in Sydney and Beijing.
Serena said Friday that "we're the defending champion and we want to defend our title and I don't see why we wouldn't."
The sisters were unable to defend their title in Athens 2004 after Serena injured her knee.
They are in Milan to play Italians Francesca Schiavone and Flavia Pennetta in an exhibition match on Saturday.
Venus also won the singles gold medal in Sydney.
Venus' ranking has fallen to No 104 because of injuries, while Serena is ranked 16th.