US Makes Good In Hemisphere Olympics - Pan American Games Argentine, host nation to the first pan American Games takes the honors, as 2,000 athletes compete. The united states wins the pole vault and the 110-meter hurdles. MCU Argentina athletes are first to march in the opening ceremony parade. OHS The opening parade. MCU Guatemala marches by with an athlete holding the banner. MCU President and Madam Peron, Eva Peron receives a bouquet of flowers from the United States team. MLS A runner comes into the stadium bearing a torch. MCU A crowd of 75,000 jams the stadium. MLS 110 meter hurdles. MCU The winner Dick Adelcy of the United States. The Javelin Throw, Pole Volt, Bob Richards of the United States. MLS 100 meter dash, the runner from Cuba - wins.