At Wimbledon, Disappointing Results for U.S. Olympians WIMBLEDON, England - The United States Tennis Association must be hoping that its squad announced Tuesday for the London Olympics will fare better at the All England Club next month than it has so far at Wimbledon. Representing the men in singles will be John Isner, Andy Roddick, Donald Young and Ryan Harrison. Roddick is scheduled to play later Tuesday, but of the other three Americans only Harrison won his first-round match. Isner and Roddick will team in doubles, as will Bob and Mike Bryan. The women's team is headlined by the Williams sisters, Serena and Venus, who will compete in singles and together in doubles, a competition they won gold in at the Beijing Olympics in 2008. Venus Williams, struggling with an autoimmune disorder, lost her first-round match Monday to Elena Vesnina. Also competing for the U.S. will be Christina McHale and Varvara Lepchenko in singles, and Liezel Huber and Lisa Raymond in doubles. McHale, the 28th seed, was tied 7-7 in the third set against Johanna Konta before play was suspended Monday evening because of darkness.