Looby played forward both professionally and for the
U.S. national team. In the fall of 1949, he played for Dohle's of the St. Louis Major League. In January 1950, the team was briefly renamed Selby's before becoming Lenneman's as the team's sponsorship changed. In April 1950, Looby signed with Zenthoefer Furs in the St. Louis Municipal League. In the fall of 1950, he joined the
St. Louis Raiders which won the National Amateur Cup in 1952. After that victory, Tom Kutis, owner of the Kutis Funeral Home, began to sponsor the team. Looby played the next two seasons with the Grapette Soccer team, rejoining the team, now known as
St. Louis Kutis, in 1954, where he played until 1970. In 1954, he led the Municipal League in scoring. Looby played in Kutis' six consecutive National Amateur Cup championships (1956–1961). He also scored goals in both games of the
1957 National Challenge Cup championship over New York Hakoah. In 1958, the
U.S. Soccer Football Association used the Kutis team as the U.S. national team in two world cup qualifying games against Canada. Another memorable event for Looby as a Kutis team member took place on May 5, 1955, when Kutis defeated
1. FC Nürnberg, 3–2. Looby scored a goal in this game. The Nürnberg team in 1955 featured four players from the 1954 West German World Cup championship team. Seven years later, in 1962, Kutis defeated Nurenberg a second time by the same score of 3–2. Looby also scored a goal in this game. ==National team==