Glenn Evans Derby Jr. is an American former professional football player who was an offensive lineman in the National Football League (NFL). He was selected by the Saints in the eighth round of the 1988 NFL draft. He played three seasons for the New Orleans Saints (1988–1990) as a tackle, guard and center. He went to Green Bay Packers as a free agent and left after injury in 1991. He played college football for the Wisconsin Badgers.