He was named the starter at fullback as a sophomore, leading the team with 73 carries for 396 yards (5.4 avg.) and 8 touchdowns in 10 games. He led the team again as a senior, appearing in 8 games with 89 carries for 482 yards (5.3 avg.) and 4 touchdowns.
Professional career
Chicago Bears
Smith was selected by the Chicago Bears in the fifteenth round (179th overall) of the 1955 NFL draft. He spend the year out of football serving his military service in the Korean War.
In 1956, he was claimed off waivers by the San Francisco 49ers and played the remaining 5 games of the season as a reserve defensive back. The next year, he played at left cornerback, registering 2 interceptions and finishing third in the league with a 26.3-yard average in kickoff returns.
In 1958, while he served as a kickoff returner, he was eased into the running back position until the eleventh game of the season when he ran for 113 yards on seven carries, including and 80-yard touchdown. He was dubbed the "Cinderella Workhorse" by 49ers historian Donn Sinn, for his inauspicious route into prominence.
In 1959, Hugh McElhenny was moved to flanker and Smith was named the starter at left halfback alongside Joe Perry. He finished second in the NFL (behind Jim Brown) with 1,036 rushing yards, becoming the second player in franchise history to have a 1,000-yard rushing season (Perry was the first one) and tied a team record with 10 rushing touchdowns. In the following years he played halfback and fullback, leading the team in rushing for 5 consecutive seasons. He also was a part of the 'Alphabet Backfield', that included Y. A. Tittle, R.C. Owens and C.R. Roberts.[2] In 1964, he was a backup and rushed for 55 yards on 13 carries.
On September 6, 1965, he was traded to the Dallas Cowboys in exchange for a fifth round draft choice (#69-Mel Phillips). At the time he ranked second all-time on the 49ers career rushing list with 4,370 yards.
In 1968, Smith was hired as a scout for the San Francisco 49ers and remained in that post for 7 years.[4] He worked as a security executive at Sears until his retirement in 1991.