Donald Ross McCormack (born September 18, 1955) is a former professional baseball player and coach. He was a fourth round draft pick (75th overall) in the 1974 Major League Baseball Draft, by the Philadelphia Phillies out of Omak High School. On September 30, 1980, the 25-year-old McCormack made his major league debut with the Phillies. However, he would end up playing only 5 games total in the majors (in 1980 and 1981 with the Phillies), while spending most of nine years playing in the minor leagues in the Philadelphia and Detroit Tigers farm systems.