) is an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

-born Canadian

Canadian football

Canadian football is a form of gridiron football played exclusively in Canada in which two teams of 12 players each compete for territorial control of a field of play long and wide attempting to advance a pointed prolate spheroid ball into the opposing team's scoring area...

 and American football

American football

American football is a sport played between two teams of eleven with the objective of scoring points by advancing the ball into the opposing team's end zone. Known in the United States simply as football, it may also be referred to informally as gridiron football. The ball can be advanced by...

 quarterback

Quarterback

Quarterback is a position in American and Canadian football. Quarterbacks are members of the offensive team and line up directly behind the offensive line...

.

Slack was Auburn University

Auburn University

Auburn University is a public university located in Auburn, Alabama, United States. With more than 25,000 students and 1,200 faculty members, it is one of the largest universities in the state. Auburn was chartered on February 7, 1856, as the East Alabama Male College, a private liberal arts...

's starting quarterback in 1989 when the Crimson Tide from the University of Alabama

University of Alabama

The University of Alabama is a public coeducational university located in Tuscaloosa, Alabama, United States....

 came to Jordan-Hare Stadium

Jordan-Hare Stadium

Jordan–Hare Stadium is the playing venue for Auburn University's football team located on campus in Auburn, Alabama, USA. The stadium is named for Ralph "Shug" Jordan, the University's winningest football coach, and Cliff Hare, a member of Auburn's first football team as well as Dean of the Auburn...

 for the first time in the history of the Iron Bowl rivalry. Prior to 1989, all Alabama–Auburn games were played at Legion Field

Legion Field

Legion Field is a large stadium in Birmingham, Alabama, United States, primarily designed to be used as a venue for American football, but is occasionally used for other large outdoor events. The stadium is named in honor of the American Legion, a U.S. organization of military veterans. At its peak...

 in Birmingham, Alabama

Birmingham, Alabama

Birmingham is the largest city in Alabama. The city is the county seat of Jefferson County. According to the 2010 United States Census, Birmingham had a population of 212,237. The Birmingham-Hoover Metropolitan Area, in estimate by the U.S...

. Auburn won the game 30–20 over an Alabama team that was unbeaten and ranked #2 in the nation.

After spending his collegiate

College football

College football refers to American football played by teams of student athletes fielded by American universities, colleges, and military academies, or Canadian football played by teams of student athletes fielded by Canadian universities...

 career with Auburn, Slack was selected in the 12th round (321st overall) in the 1990 NFL Draft

1990 NFL Draft

The 1990 NFL Draft was the procedure by which National Football League teams selected amateur college football players. It is officially known as the NFL Annual Player Selection Meeting. The draft was held April 22–23, 1990...

 by the Houston Oilers. Slack also played in the WLAF

World League of American Football

The World League of American Football was founded in 1990 with support from the National Football League to play professional American football in North America, Europe and later possibly Asia...

 for the New York/New Jersey Knights

New York/New Jersey Knights

New York/New Jersey Knights was a franchise in the World League of American Football for the 1991 and 1992 seasons. They played in the North American East division, which they won in the 1991 season. They were coached by Mouse Davis, an architect of the Run & Shoot offense.After 1992 the NFL ...

 and then played in the Canadian Football League

Canadian Football League

The Canadian Football League or CFL is a professional sports league located in Canada. The CFL is the highest level of competition in Canadian football, a form of gridiron football closely related to American football....

 with the Winnipeg Blue Bombers

Winnipeg Blue Bombers

The Winnipeg Blue Bombers are a Canadian football team based in Winnipeg, Manitoba. They are currently members of the East Division of the Canadian Football League . They play their home games at Canad Inns Stadium, and plan to move to a new stadium for the 2012 season.The Blue Bombers were founded...

 and the Saskatchewan Roughriders

Saskatchewan Roughriders

The Saskatchewan Roughriders are a Canadian Football League team based in Regina, Saskatchewan. They were founded in 1910. They play their home games at 2940 10th Avenue in Regina, which has been the team's home base for its entire history, even prior to the construction of Mosaic Stadium at Taylor...

, whom he led to a Grey Cup

Grey Cup

The Grey Cup is both the name of the championship of the Canadian Football League and the name of the trophy awarded to the victorious team. It is Canada's largest annual sports and television event, regularly drawing a Canadian viewing audience of about 3 to 4 million individuals...

appearance.