He played college football for the Ohio State Buckeyes and was selected in the first round of the 1975 NFL draft with the 24th overall pick.
During his nine-season career, Colzie recorded a total of 25 interceptions, which he returned for 412 yards and a touchdown.
One of his more notable performances was in the Raiders' 32–14 win over the Minnesota Vikings in Super Bowl XI.
He played in the NFL for the Oakland Raiders (1975–1978), Miami Dolphins (1979), and Tampa Bay Buccaneers (1980–1983).
He also played for the Orlando Renegades of the United States Football League (USFL) in 1985.