Smith was signed as an undrafted free agent by the Dallas Cowboys after the 2003 NFL draft on May 1. He was signed to the practice squad on September 1 after being waived on August 31.[1] He was released on August 31, 2004.[2]
Smith was claimed off waivers by the Arizona Cardinals on September 1, 2004.[3] He was waived five days later on September 5.[4]
On September 7, 2004, he was signed to the New Orleans Saints' practice squad. He was promoted to the active roster on September 18 and made his debut versus the San Francisco 49ers on September 19. He finished with 16 tackles and one start. He was released on November 30, after getting food from the Georgia Dome press box, while being deactivated for a game.[5]
Smith was claimed off waivers by the Cincinnati Bengals on December 2, 2004.[6] He played defensive tackle, while recording six tackles and one start. In 2005, he recorded 38 tackles in 13 games with five starts. In 2006, he registered 14 tackles. In 2007, the Bengals opted not to match the restricted free-agent offer sheet that Smith received from the Cleveland Browns.[7]
Smith signed a four-year deal with the Cleveland Browns as a restricted free agent on March 16, 2007.[8] He played mostly as a defensive end in a 3-4 defense, started 11 games and made 62 tackles.[9]
In 2008, he was tried at nose tackle during training camp, but was moved back to defensive end. He started 9 out of 11 games, while making 47 tackles and being limited with a calf injury. On December 23, various media outlets reported that Brady Quinn had a physical altercation with Smith in the Browns' weight training room, and that Smith punched Quinn in the face. Quinn denied the reports, and coach Romeo Crennel refused to comment; Browns tight end Darnell Dinkins confirmed the fight during a radio interview on WQAL. Smith did not play in the following game because of a coaches' decision.[10] He was released on August 8, 2009.[11]
Smith was signed by the Detroit Lions on August 10, 2009. Smith was released during the final roster cuts on September 5.[12] He also was suspended for the first 4 games of the season for violating the league's anabolic steroid policy.[13]
On November 19, 2009, he signed with the Las Vegas Locomotives of the United Football League, to replace an injured Wendell Bryant.[14] He contributed to the team winning the UFL Championship game against the Florida Tuskers on November 27.[15]
Smith was re-signed by the Bengals on December 9, 2009.[16] He was waived on December 12 and re-signed on December 16. He was not re-signed after the season.
Smith signed with the Kansas City Chiefs on March 10, 2010.[17] In consecutive weeks, he was accused by players from the opposing team of grabbing them in their private parts during play. Alex Mack of the Cleveland Browns made the first claim after the two teams' Week 2 matchup, followed by Anthony Davis of the San Francisco 49ers, who drew a penalty for retaliating against Smith in Week 3.[18] Although Smith denied both allegations, he was fined by the league.[19]
On July 29 of 2011, he signed with the Tennessee Titans a three-year, $7.25 million contract, to play as a defensive tackle. He scored his first career rushing touchdown on Week 12 against the Seattle Seahawks. He finished with 6 starts, 25 tackles and one sack.
In 2012, he showed up in training camp out of shape and underperformed. He was released on August 22.[20]
On November 5, 2012, he re-signed with the Chiefs, to serve as insurance in case Glenn Dorsey missed multiple games with a calf injury.[21] He was not re-signed for the 2013 season.
