Career
He also played five seasons in the American Soccer League. Pietras began his professional career with the Philadelphia German-Americans of the American Soccer League in 1933. He spent five seasons with Philadelphia, winning the 1935 league title and the 1936 National Challenge Cup championship.
He retired from playing professionally in 1938.
In 1934, Pietras earned two caps with the United States. national team His first game was a United States. victory over Mexico, 4-2, in a World Cup qualifier.
In that game, the United States. lost to Italy in the first round of the cup. In 1936, Pietras was selected for the United States. soccer team which competed at the 1936 Summer Olympics.
The United States. lost 1-0 to Italy and was eliminated in the first round.