As a senior, Smith helped lead Mundy's Mill to its best record to date, 8–5, while rushing for 261 times for 2,201 yards and earning first team all-state honors.

[8] During the regular season, Smith rushed for 1,084 yards and 15 touchdowns, earning third-team all-Big Ten Conference honors for his efforts.

Smith starred in the game, leading all rushers with 17 carries for 74 yards and added a touchdown, which earned him the offensive MVP award for the Holiday Bowl.

[12] Smith started off his senior campaign in 2018 with a bang, rushing for a (then) career-high 156 yards against New Mexico State in a 48–10 victory.

However, in the next game against Fresno State, on just the third play from scrimmage, Smith tore his ACL on his left knee.

[22] In Week 10 of the 2020 season, he made his NFL debut against the Tampa Bay Buccaneers and had three carries for 13 rushing yards.

[23] In the final game of the 2020 NFL season, he scored his first career rushing touchdown against Carolina's division rivals New Orleans Saints in a 33-7 loss.

[34] On September 23, 2023, Smith signed with the Pittsburgh Maulers of the United States Football League (USFL).

[35] The Maulers folded when the XFL and USFL merged to create the United Football League (UFL).