Both are rising seniors for Tennessee and both have now added a gold medal in international play to the 2007 NCAA national title they won in April.
The United States was led by Matee Ajavon, who scored 27 points. The second-leading scorer was Angel McCoughtry with 17 points.
The United States faced its biggest challenge of the tournament in host country Brazil, with both teams entering the contest 4-0.
Not only was the United States the youngest team in the competition, nearly seven years younger than Brazil's squad on average, but the United States had to overcome a partisan home crowd.
The United States finished the competition 5-0 and handed Brazil its only loss of the tournament.