sentences:  The United States played its first official international match under the auspices of U.S. Soccer on August 20, 1916, against Sweden in Stockholm, which the U.S. won 3–2, with goals from Dick Spalding, Charles Ellis and Harry Cooper.In 1921 Cahill was instrumental in forming the American Soccer League, which was the first serious attempt to establish a professional league in the United States.He served as the organization's secretary from 1921 to 1926.