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. In 1922, he signed with
Harrison S.C. of the
American Soccer League (ASL). However, he remained an amateur, refusing to accept any payment. In the 1922-1923 ASL season, Douglas played twenty-three games, winning fourteen and gaining a 2.44
goals against average (GAA). In 1923, he moved to the
Newark Skeeters (at times called Newark F.C.). Douglas spent two seasons with Newark, still maintaining his amateur status. In the fall of 1925, Douglas began playing for the
New York Giants. 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. After the Giants resolved that issue, Douglas continued to play for them until October 1927 when he moved to the
Fall River F.C. 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. He eventually finished the season back with Fall River F.C. In 1929, Douglas signed with the
New York Nationals. In 1930, Charles Stoneham, owner of the Nationals, renamed his team the New York Giants when the original Giants changed their name to
New York Soccer Club. Douglas continued with the new Giants through the 1930 spring and fall season before moving to the
New York Americans in 1931. He played only seven games before retiring from professional soccer. ==National team==