Edmunds attended and played college football at Virginia Tech from 2013 to 2015 and Maryland in 2016. He made his collegiate debut against Alabama and had 20 carries for 132 rushing yards and a rushing touchdown in the loss. In the 2013 season, he had 675 rushing yards and ten rushing touchdowns to go along with 17 receptions for 155 receiving yards and two receiving touchdowns. In the 2014 season, he appeared in five games and had 21 carries for 97 rushing yards. In the 2015 season, he appeared in ten games and had 47 carries for 185 rushing yards and three rushing touchdowns. In the 2016 season, his only with Maryland, he had 26 carries for 158 rushing yards and a rushing touchdown.
Edmunds signed with the New Orleans Saints as an undrafted free agent on May 15, 2017. On September 11, 2017, in the season opener against the Minnesota Vikings on Monday Night Football, Edmunds had one kickoff return for 22 yards in his NFL debut. On November 12, 2017, he recorded his first career touchdown against the Buffalo Bills, running it in for 41 yards in the 47–10 victory. Overall, in his rookie season, he finished with nine carries for 48 rushing yards and a rushing touchdown. Edmunds was waived by the Saints on September 3, 2018.
Pittsburgh Steelers
On September 5, 2018, Edmunds was signed to the Pittsburgh Steelers' practice squad, reuniting him with his brother Terrell. He was promoted to the active roster on December 4, 2018. He appeared in four games and contributed on special teams in the 2018 season. On August 31, 2019, Edmunds was waived by the Steelers and was signed to the practice squad the next day. He was promoted to the active roster on October 11, 2019. In Week 10 against the Los Angeles Rams, Edmunds recorded an interception off punter Johnny Hekker on a pass attempt during a fake punt in the 17–12 win. In the 2019 season, he recorded 22 carries for 92 rushing yards to go along with six receptions for 48 receiving yards.
Personal life
Edmunds' brothers, Terrell and Tremaine, played college football at Virginia Tech. His father, Ferrell Edmunds, was a two-time Pro Bowler, and his younger brothers were the first pair of brothers to ever be drafted in the first round of the same NFL draft.