Blount attended Eleanor Roosevelt High School, where he practiced football, baseball and track. He was a two-way player at running back and defensive back. He accepted a football scholarship from the University of Maryland. As a freshman, he was a backup running back, only having 8 carries for 66 yards. As a sophomore, he shared the running back position with Rick Badanjek, collecting 128 carries for 759 yards and 5 touchdowns. Against both Wake Forest University and the University of North Carolina, he had matching 52-yard touchdown receptions. He was a part of one of the greatest comebacks in college football history, in the 42-40 win against the University of Miami. Against Clemson University, he had a career-high 214 rushing yards. Against the University of Virginia, he had a career long 72-yard touchdown run, finishing with 104 rushing yards. As a junior, he was named the regular starter, although he still shared the running back position with Badanjek. He registered 171 carries for 828 yards and 4 touchdowns. Against the University of Virginia, he had 26 carries for 186 yards. As a senior co-captain, he had 119 carries for 505 yards and 3 touchdowns. He didn't have any 100-yard games, but showed he was an all-round running back, displaying solid receiving and blocking skills. He finished his college career with 426 carries for 2,158 yards, a 5.1-yard rushing average, 12 rushing touchdowns, six 100-yard games, 64 receptions for 567 yards and 5 receiving touchdowns.
Blount was selected by the Dallas Cowboys in the 9th round of the 1987 NFL Draft. As a rookie, he set the club record for a vertical leap. He was waived on September 7. After the NFLPA strike was declared on the third week of the 1987 season, those contests were canceled and the NFL decided that the games would be played with replacement players. He was re-signed to be a part of the Dallas replacement team that was given the mock name "Rhinestone Cowboys" by the media. He started against the New York Jets, leading the team with 28 carries for 72 yards and one touchdown. He started against the Philadelphia Eagles and although he shared the position with Tony Dorsett, he posted 18 carries for 53 yards and 2 touchdowns. He suffered a knee injury in the third game against the Washington Redskins. On October 27, he was placed on the injured reserve list. He wasn't re-signed after the season.
In 1989, he signed as a free agent with the Edmonton Eskimos of the Canadian Football League. He was released before the start of the season in July.
Washington Comamndos (AFL)
In 1990, he signed with the Washington Commandos of the Arena Football League as a fullback-linebacker. He appeared in 5 games, tallying 15 receptions for 149 yards, 6 carries for 27 yards and 12 tackles.
Albany Firebirds (AFL)
On June 5, 1991, he was signed by the Albany Firebirds of the Arena Football League as a fullback-linebacker. He appeared in 9 games, making 13 carries for 25 yards, one touchdown, 5 receptions for 27 yards, 33 tackles, one interception and 1.5 sacks.
Personal life
In 1989, he had a tryout with the U.S. national bobsledding team.
