Dugan played for Holy Cross for just a year before he was signed to a lucrative contract by the late Connie Mack for the old Philadelphia A’s. But he led the Crusaders to an Eastern baseball championship while he played third base in that one season (1917). The Crusaders posted a 22-4 record that year, and Dugan led the team in hitting with a .384 average (33-for-86). Three of the team's four defeats were by just a run, the other by two. He never played in the minor leagues, going directly to the A's where he played until 1922. That year he joined the Boston Red Sox for 84 games and then became a New York Yankee. He played in five world series with the Yankees and roomed with Babe Ruth. He played in 1,447 major league games and has a lifetime average of .280. In both the 1923 and '24 seasons he scored more than 100 runs and was in the top 10 in the American League in that category. He passed away in 1982.