He played college football at Troy, and was signed as an undrafted free agent by the Jacksonville Jaguars in 2011.

As a senior, he helped lead his high school football team to a District Championship, earning first-team All-District, All-Area and All-Region.

Harris also lettered in track & field at Central and was named All-State, All-Region, All-District and team MVP.

[2] Also a letterman in weightlifting, Harris was named All-State, All-Region and All-District and even qualified for the state meet in the 183-pound class.

[3] As a freshman in 2007, Harris saw action in all 12 games as a backup running back, finishing as the teams' third leading rusher, with 82 carries for 372 yards with just two fumbles during the season, losing one.

He owned the highest vertical leap (41.5 inches) and 2nd fastest 40-yard dash time (4.37s) on Troy's team.

He had his best game of the season in a national spotlight with 112 yards and two scores on the ground against Central Michigan in the 2010 GMAC Bowl.

On January 5, 2013, in the NFC Wild Card game against the Vikings Harris totaled 100 yards in rushing and receiving with a touchdown as the Packers went on to win 24–10.

In the NFC Divisional Playoff loss to the San Francisco 49ers, Harris carried the ball 11 times, rushing for 53 yards and a touchdown.

[9] On September 14, 2015, the New Orleans Saints announced that, following a workout of several running backs, they had signed Harris to the practice squad.

[20] When the season ended prematurely due to the COVID-19 pandemic, Harris had played in 4 out of a possible 5 games, rushing 21 times for 44 yards and a touchdown, the deciding score in the Wildcat's week 5 win over the Tampa Bay Vipers.