Background
Conterio was born in Chicago at the start of the Great Depression. He grew up on the northwest side of Chicago to a family which struggled financially.
Conterio was born in Chicago at the start of the Great Depression. He grew up on the northwest side of Chicago to a family which struggled financially.
Conterio graduated from Carl Schurz High School in 1948.
Despite these difficulties, Conterio became involved in athletics at Portage Park. This led him to playing Juvenile Ball with a Norwegian-American club He credits that coach with teaching him to become ambidextrous.
In high school, he earned nine varsity athletic letters in soccer, tennis, and wrestling.
As captain, he led the Schurz High School soccer team to two Chicago City Championships, twice being named as an All-State soccer player. Conterio played for several adult soccer teams before joining the Chicago Slovaks of the National Soccer League of Chicago.
In 1952 he was chosen for the United States. Olympic Soccer Team 1952 Summer Olympics, but did not enter any games in the tournament. Conterio also spent time in the bid 1950s in the United States. Army.
After his discharge in 1956, he was chosen for the 1956 United States. Olympic team
He played one game during that tournament. After the Olympics, Conterio joined the Chicago Polish Falcon. He found the situation with the Falcons unpleasant and returned to the Slovaks after two games.