In 1960, Yerman ran his personal best of 46.0 s over 400 meters in the run-up to the US Olympic eliminations. He also won the final in 46.3 s ahead of Earl Young and Otis Davis . On August 12, 1960 at the Olympic test in Walnut, Eddie Southern , Young, Davis and Yerman ran a new world record of 4 times 440 yards in 3: 05.6 minutes.
At the Olympic Games in Rome in 1960 , Yerman was eliminated in the semi-finals over 400 meters. The 4 x 400 meter relay with the cast Jack Yerman, Earl Young, Glenn Davis and Otis Davis won gold before the relay from Germany. Both seasons stayed under the old world record for over a second. The new world record of the US season of 3: 02.2 min was beaten four years later in the finals of the Olympic Games in Tokyo .
After his career, Jack Yerman was a high school teacher.
literature
Bill Mallon & Ian Buchanan: Quest for Gold. New York City 1984, ISBN 0-88011-217-4