Smith attended Independence High School. As a senior, he had 11 interceptions, 14 touchdown receptions and 7 kickoff or punt returns for touchdowns. He received All-State, All-City and All-District honors. In his high school career he had 20 interceptions. He also helped his team to a regional finals appearance in the state playoffs.
College career
Smith accepted a football scholarship from the University of Cincinnati. As a redshirt freshman, he appeared in 7 games playing on special teams. As a sophomore, he played in 13 games as a backup cornerback, mostly on the left side behind John Bowie. He tallied 23 tackles, 2 fumble recoveries, 3 passes defensed and 2 interceptions. He became the starter at right cornerback as a junior. His interception in the upset, against then AP Number 2 Rutgers, was featured on ESPNSportscenter. He set the school single-season record with 8 interceptions and combined with cornerback Mike Mickens to register a total of 14 interceptions, the most by a cornerback duo in college football in 2007. In his last year, he started the first 5 games at free safety before returning to the right cornerback position. He registered 53 tackles, 10 passes defensed and 2 interceptions. He contributed to the team winning the Big East Championship and receiving an invitation to play in the 2009 Orange Bowl against Virginia Tech. He finished his college career tied for second in school history with 12 interceptions, after playing in 47 games with 28 starts. He also registered 126 tackles, 21 passes defensed, 3 forced fumbles, 353 return yards on 17 kickoffs returns and 219 yards on 23 punt returns.
Smith was selected by the Dallas Cowboys in the fifth round of the 2009NFL Draft. He was switched from cornerback to safety. He was waived at the end of training camp onSeptember 5. He is best remembered by getting beat by placekickerDavid Buehler in a post-practice 50-yard race during training camp.
Cleveland Browns (first stint)
On September 6, 2009, the Cleveland Browns claimed him off waivers. He was released on September 16.
Chicago Bears
On September 17, 2009, he was claimed off waivers by the Chicago Bears. He was inactive in 2 games before being released on September 29 and signed to the team's practice squad.
Detroit Lions
On November 18, 2009, the Detroit Lions signed Smith off the Chicago Bears practice squad. In seven games he registered 16 tackles and a pass defensed. Smith was waived on April 27, 2010.
Cleveland Browns (second stint)
On April 28, 2010, he was claimed off waivers by the Cleveland Browns. He spent one week with the team and was waived on September 15. He was re-signed to the practice squad on October 7. He was released on September 4, 2010 and later signed to the practice squad. He was cut on September 3, 2011.