With some of America's biggest stars deciding to stay home, Claire Curzan and Hunter Armstrong claimed the spotlight at the World Aquatics Championships on Tuesday. Curzan won gold in the women's 100-meter backstroke at the Aspire Dome, while Armstrong followed just a few minutes later with a victory in the men's 100 back. The U.S. leads the swimming medal table with four golds and eight medals overall through the first three days of competition in Doha.