He earned nine caps with the U.S. national team, making his first appearance for the "Stars and Stripes" at the 1924 Summer Olympics.

Douglas began his organized playing career with the youth club, Central Juniors of Newark, New Jersey in 1907 when he was nine years old.

Over the next fourteen years he played for a variety of amateur teams including Ryerson, Antlers, Erie and Swansons.

However, he remained an amateur, refusing to accept any payment.Archived October 28, 2009, at the Wayback Machine In the 1922-1923 ASL season, Douglas played twenty-three games, winning fourteen and gaining a 2.44 goals against average (GAA).

However, the Newark Skeeters still listed Douglas on their rosters and the Giants were forced to forfeit several games after teams complained to the league.Archived October 28, 2009, at the Wayback Machine After the Giants resolved that issue, Douglas continued to play for them until October 1927 when he moved to the Fall River F.C.Archived October 28, 2009, at the Wayback Machine After one season with Fall River, Douglas joined the Philadelphia Field Club during the 1928-1929 season, playing twelve games before transferring to the Brooklyn Wanderers for three games.

Douglas continued with the new Giants through the 1930 spring and fall season before moving to the New York Americans in 1931.