[1] Mack attended Clemson University for four years where he played football for its team, helping them reach the national championship in 1981.

He was traded to the Los Angeles Express, where he played the 1984 USFL season.

[5] He was also selected by the Cleveland Browns 11th overall in the 1984 NFL Supplemental Draft of USFL and CFL Players.

[10] Mack has mentioned having two daughters who were young when he resided in Houston; he lived there for about 14 years.

[9] In 1989 in Cuyahoga County Court in Cleveland, Mack pleaded guilty to cocaine use in exchange for three other charges (cocaine trafficking, possession of criminal tools, and using a motor vehicle for drug abuse)[12] being dropped.