What U.S. territory beat Team USA in basketball during the 2004 Olympics?

Puerto Rico beat Team USA in basketball during the 2004 Olympics. Puerto Rico won 92–73 in the opening game of the men's tournament, defeating the United States by 19 points in Athens, Greece.

The result was a major Olympic upset because the United States had won gold medals in the previous three men's basketball tournaments. The 2004 American roster included NBA stars such as Allen Iverson, Tim Duncan, LeBron James, Dwyane Wade, and Carmelo Anthony, but the team struggled with outside shooting, defense, and international play.

Puerto Rico was led by guard Carlos Arroyo, who scored 24 points in the victory. The loss was only the third defeat in U.S. Olympic men's basketball history after NBA players became eligible in 1992, following earlier losses to the Soviet Union in 1972 and 1988.

The United States eventually reached the bronze-medal game but lost three times overall and finished with bronze. Argentina won gold, Italy took silver, and Puerto Rico's victory remains the largest Olympic defeat for a U.S. men's basketball team.