In 1938, Luftspring knocked out Frank Genovese before a Toronto crowd of 10,000 in the 13th of 15 rounds to win the Canadian welterweight championship. Genovese was down at least three times in the final rounds for counts of 9. The fight was his first in Canada under the management of French-American Al Weill, who had managed the exceptional welterweight Lou Ambers. Genovese and Luftspring's rivalry was extremely competitive and one of the dominant story lines of Toronto boxing in the late 1930s.