Roger Federer (L) and Stanislas Wawrinka of Switzerland enter the court prior to the men's doubles gold medal match of Beijing Olympic Games tennis event against Simon Aspelin and Thomas Johansson of Sweden in Beijing, China, Aug. 16, 2008. (Xinhua/Xing Guangli) Photo Gallery>>>

    BEIJING, Aug. 16 (Xinhua) -- Switzerland's Roger Federer and Stanislas Wawrinka lead Sweden's Simon Aspelin and Thomas Johansson 2-0 in the final of the men's doubles tennis at the Beijing Olympics here on Saturday.