[2] While born in Germany, Schaller's family moved to the United States when he was a young boy.

He joined Schwaben of the German American Soccer League when he was in high school.

[5] In 1959, he was with the U.S. team which won the bronze medal at the Pan American Games.

However, the Pan American matches were not counted as official U.S. national team games.

After retiring from playing professionally, Schaller became a youth and high school soccer coach.