Hackney attended Douglass High School in Atlanta, Georgia and was a student and a letterman in football and baseball. In football, the Atlanta Journal-Constitution twice named him as an All-State Honorable Mention selection, and as a senior, he was also named the Atlanta Quarterback of the Year and his team's Most Valuable Player. Hackney graduated from Douglass High School in the year 2001.
College career
Attending college at the University of Alabama at Birmingham (UAB), he was redshirted in 2001 as a true freshman. Hackney currently holds several of the career UAB passing records, including passing yards (9,886 yards), touchdowns (71 touchdowns), completions (694 completions) and most total offense per game (243.4 yards per game). He also holds several single-season records for the Blazers.
Professional career
Cleveland Browns
Hackney was not drafted and was subsequently signed as a free agent with the Cleveland Browns. The Browns cut him on September 2, 2006.
Denver Broncos
On January 2, 2007, he signed with the Denver Broncos. Hackney spent the training camp with the Broncos where he competed with Preston Parsons, and Patrick Ramsey for the backup quarterback position.