In March 2012, prior to his senior year in high school, Smith announced that he had committed to play college football for the University of Michigan.[5] He also received collegiate offers from Bowling Green, Indiana, Ohio State, Penn State, Purdue, and West Virginia. As a freshman in 2013, Smith appeared in twelve games and had twenty-six carries for 117 yards.[1]
As a sophomore in 2014, Smith led Michigan with 519 rushing yards on 108 carries.[6] In the opening game of the 2014 season, Smith carried the ball eight times for 115 yards. He also scored two touchdowns and had a run of sixty-one yards.[7]Derrick Green also rushed for 170 yards in the game, as Smith and Green became the first pair of Michigan running backs to rush for over 100 yards in the same game since 2007.[8]
During the 2015 season, Smith was again Michigan's leading rusher with 753 yards and six touchdowns on 180 carries and emerged as one of the star players in Jim Harbaugh’s first year at the helm.[9]
Through the first eleven games of the 2016 season, Smith led Michigan with 750 rushing yards and ten touchdowns on 144 carries.[10] On November 19, 2016, the 10-1 Wolverines were struggling against Indiana, and Smith proceeded to put the team on his back. He rushed for a career-high 158 yards and had two momentum-changing touchdowns against Indiana.[11]
Smith signed with the Miami Dolphins as an undrafted free agent on May 5, 2017.[13] He was waived on September 2, 2017, and was signed to the Dolphins' practice squad the next day.[14][15] He was promoted to the active roster on November 18, 2017.[16] He was waived by the Dolphins two days later and re-signed to the practice squad.[17] He was promoted back to the active roster on November 29, 2017.[18]
Washington Redskins
Smith signed with the Washington Redskins on August 20, 2018.[19] On September 1, 2018, he was waived for final roster cuts before the start of the 2018 season.[20]
Smith was drafted in the 3rd round in the 2020 XFL Draft by the Tampa Bay Vipers.[24] He had his contract terminated when the league suspended operations on April 10, 2020.[25]
Smith signed with the BC Lions of the CFL on December 15, 2020.[27] He was released on March 19, 2021.[28]
Pittsburgh Maulers
Smith was drafted in the 2022 USFL draft by the Pittsburgh Maulers, but was cut from the team before the season by Kirby Wilson for requesting pizza that a staffer had brought into the cafeteria at meal time, instead of the chicken salad cafeteria food as Smith said he didn’t like chicken salad. The decision by Wilson was harshly criticized by many across social media.[29]