Smith attended Texas A&M University, where he played cornerback for the Aggies. In 1991 the Aggies allowed only 222.4 yards per game to lead the nation in total defense. He helped win the Southwest Conference championship in 1991 and 1992. As a senior, he was called upon to return kicks midway through the season. He quickly made his mark returning one punt 71 yards for a touchdown against Rice University and latter adding a 73-yard touchdown kickoff return against Texas. He finished the season with the sixth best punt return average in the nation and scored six special teams touchdowns. Smith owns the all-time Aggieinterception and Southwest Conference record with 20. He was an All-SWC selection for 3 straight years, a semifinalist for the Jim Thorpe Award given to the nation's best defensive back and was a consensus All-American in 1991. He is arguably the greatest cornerback in Texas A&M University history and was inducted into the Texas A&M Athletic Hall of Fame in 1997.
Professional career
Smith was drafted in the first round of the 1992 NFL Draft by the Dallas Cowboys and became the starting left cornerback late in his rookie season, helping the team win their first Super Bowl since the 1970s. In his second season, he led the Cowboys with six interceptions and teamed with Larry Brown to form the youngest set of starting cornerbacks in the NFL. In 1994 he led the team with 17 passes defended. Smith tore his Achilles tendon in the first game of the 1995 season against the New York Giants on Monday Night Football. While recovering from the injury, Smith appeared in a Nike commercial with newly-signed Deion Sanders, using crutches and playing the role of "The Gipper". In 1996 he regained his starting position, and had five interceptions and established a career-high with 18 passes defensed. Including 1998, Smith led the Cowboys in passes defensed every year he was in the league, except 1992 and 1995. He ended up winning three Super Bowls in his first four seasons. In 1999 he reported to training camp with a back injury and missed eight regular season games. Smith's final season was in 2000, retiring after hurting his knee during training camp. He played nine seasons in the NFL, intercepting 19 passes and returning one for a touchdown.
NFL statistics
Personal life
After retiring from the NFL, Smith would return for one season as the color commentator of Texas A&M football games.