Hal Joseph Dues (born September 22, 1954) is an American former professional baseball player and former Major League pitcher. The 6 ft 3 in (1.91 m), 180 lb (82 kg) right-hander played for the Montreal Expos in 1977 and 1978, and again in 1980.Signed as an undrafted free agent by Montreal on May 20, 1974, after attending the University of Mary Hardin-Baylor, Belton, Texas, Dues appeared in 37 games in the Majors, 17 as a starting pitcher.