<P> Williams then came back to Wimbledon , one month after winning the title to represent the United States in the Olympics . In the first round she faced former number one Jelena Janković and won the match in just 61 minutes . She served 8 aces and did not face a single break point . She then competed against Poland 's Urszula Radwańska in the second round . Williams won the first set with a break , and won the second set with a single break . Williams served 8 aces and had 26 winners in her one - hour - and - 13 - minute victory . Her third round match was a repeat of the 2010 Wimbledon Championships final , as she faced Vera Zvonareva . The American dominated the Russian as she won the first five games before the Russian won a game . Williams then won the last seven games to win the match in just 51 minutes . In the quarterfinals , she faced former number one Caroline Wozniacki of Denmark . Williams dominated the proceedings winning the first eight games before the Dane stopped her fifteen - game winning streak and won the ninth game of the match . However , Wozniacki could not break Williams ' serve and the American closed out the match in 77 minutes . In the semifinals , she faced world number one Victoria Azarenka for the third time in 2012 . Despite Azarenka 's number one ranking , Williams dominated the match winning one and two and served 16 aces and did not face a single break point . In the final she faced Russian Maria Sharapova for the gold medal . Williams dominated the match taking the first nine games in just 45 minutes before her Russian opponent won a game . Williams then took the next three games to win for her 8th consecutive win against Sharapova . Williams served ten aces and two double faults to Sharapova 's one and five . Williams also hit 24 winners to 7 unforced errors compared to Sharapova 's six winners , and ten unforced errors . This win gave Serena a Career Golden Slam in Singles , only the second woman to do so . </P>
who did serena williams beat in the olympics
Maria Sharapova Victoria Azarenka Caroline Wozniacki Vera Zvonareva Urszula Radwańska Jelena Janković