At Wembley Stadium: The U.S. women's soccer team goes for gold against Japan, which beat the U.S. for the World Cup title on penalty kicks last summer. The U.S. has been in the title match in every Olympics since soccer was introduced in 1996 and won gold in 1996, 2004, 2008.At the Olympic Stadium: Jamaicans Usain Bolt and Yohan Blake go at it in the men's 200. Wallace Spearmon is the U.S. hope. On the decathlon's final day, Americans Trey Hardee, a former Longhorn and world record holder, and Ashton Eaton compete in the 110-meter hurdles, discus, pole vault, javelin and 1,500-meter run. At the Basketball Arena: The U.S. women's basketball team faces Australia in the semifinals -- the U.S. has beaten the Aussies in the last three gold medal games. At Earls Court: In the women's volleyball semifinals, the top-ranked U.S. team faces South Korea. Japan plays Brazil, Beijing gold medalists, in the other. At ExCeL Exhibition Centre: Sugar Land's Diana Lopez competes for a taekwondo medal in women's 57g.