After graduation in 1917 he served as a
player-coach with the professional
Massillon Tigers. His football career went on hiatus from 1918 to 1919, while serving in
World War I. After the war, Cofall helped organize the
Cleveland Indians football team, and the following year he and owner
Jimmy O'Donnell traveled to
Canton, Ohio, and attended a meeting where the
American Professional Football Association (later named the
National Football League) was organized. At the meeting Cofall was named as the league's first vice president. In 1921 he played one game with the short-lived
New York Brickley Giants. In 1920 Cofall played for the
Union Club of Phoenixville, an independent team, which featured many players from the
Buffalo All-Americans. He later played for
Union Quakers of Philadelphia, after the Phoenixville team's star player transferred to that newly created team. In 1922, he signed on to play with the, then-independent,
Pottsville Maroons. There he helped the Maroons become the top team in the
Pennsylvania coal region. In 1924, Cofall helped the Maroons win the
Anthracite League championship. The following year, the Maroons joined the NFL. ==College coaching==