The first-round Davis Cup match between Britain and the United States will be played on a clay court in left field at Petco Park from Jan. 31-Feb. 2. While organizers haven't decided if it'll be red or green clay, they feel their choice of surface will give the Americans an advantage over Britain, which is expected to be led by defending Wimbledon champion Andy Murray. ''The feeling is that Murray and anyone below him would have trouble on clay,'' Jeff Ryan of the U.S. Tennis Association said after a news conference on the infield at the downtown ballpark on Tuesday. In between now and then, with Andy still recovering from his surgery and going to Australia and playing there, I don't think they'll have a lot of clay court experience. More...