If the Team USA men can make a huge comeback in Saturday's final round of 5-man team competition, it will be a U.S. sweep of the trios and 5-man team gold medals at the 2009 Pan American Bowling Confederation Championships, USBC reported. Team USA's men and women swept the gold medals in trios Thursday and the U.S. women won the 5-man gold on Friday, but the U.S. men trail by a wide -- though not insurmountable -- margin halfway through 5-man team....