Officially, two schools offered a scholarship to him: Vanderbilt and UAB, and he received some interest from Alabama, Auburn, Kentucky, and Ole Miss.

He scored 36 touchdowns, helping Bibb County to 10–2 mark and a trip to the second round of 4A state playoffs.

A two-time West Alabama Player of the Year, Stacy ended his prep career with 5,863 rushing yards and 76 total touchdowns.

[8] He was a productive offensive force for the Commodores until his season ended prematurely with a head injury in the first half of the Florida game.

Stacy was named the SEC Offensive Player of the Week for 135-yard, three-score performance against the Wildcats on Senior Day.

[21] He got his first start on October 6, 2013, against the Jacksonville Jaguars but was forced out of the game in the fourth quarter due to a rib injury.

[24] Shortly after the Rams selected running back Todd Gurley in the 2015 NFL draft, Stacy requested to be traded.

Despite this, Stacy lost out to recently signed former teammate Tre Mason, who had only one carry in the only preseason game he appeared in.

In January 2019, Stacy signed with the Memphis Express of the newly founded Alliance of American Football for the 2019 season.

[33] On February 16, 2019, against the Arizona Hotshots, Stacy rushed for 101 yards before he was pulled out of the game, becoming the league's first running back to eclipse the century mark.

[34] Stacy was placed on injured reserve on April 1, 2019; the AAF announced shortly thereafter that it was suspending all football operations.

[37] On November 18, 2021, multiple news outlets posted a video that depicted Stacy violently assaulting his ex-girlfriend, Kristin Evans, in front of their 5-month-old son.

[39][40][41] Following the incident, the Orange County Sheriff's Office had tried to apprehend Stacy, but discovered that he had already left the state of Florida.

[42] However, he was found in Orlando on November 19 and was subsequently arrested, during which he attempted to persuade the police that his ex-partner had "staged" the assault, claiming that she was "bitter" that their relationship had ended.

[43][44] Stacy was sent to Orange County jail, where he faced charges of aggravated battery causing great bodily harm and criminal mischief.