New Orleans Saints

Smith was selected 96th overall in the 2000 NFL Draft by the New Orleans Saints.^[3] He signed a four-year, $1.7 million contract with the Saints. As a rookie, he appeared in fourteen games, including nine starts. He assumed the starting fullback role after being drafted and became one of the top blocking fullbacks in the league. He posted twenty-nine rushes for 131 yards and twelve receptions for 65 yards. He played all sixteen regular season games for the Saints during the 2002 season for the first time in his career, and helped bolster Deuce McAllister's rushing totals in 2003 thanks to his blocking.

Cleveland Browns

Smith was signed by the Cleveland Browns to a three-year $3.2 million contract as an unrestricted free agent on March 11, 2004, and played in all sixteen games of the 2004 season, including nine starts. He blocked for Lee Suggs' career-high 744-yard season. Smith went on to play in all sixteen games of the 2005 season (starting fifteen) and helped Reuben Droughns achieve the Browns' first thousand-yard season since the mid-1980s. On March 14, 2007, the Browns announced the release of Smith.

Arizona Cardinals

On March 23, 2007, he signed a two-year $1.8 million deal with the Cardinals. In 2007, he started 10 of 16 games and recorded the most receiving yards since his rookie season in 2000. In 2008, he was again the starting fullback and his role increased during the Cardinals' Super Bowl run, throwing key blocks during the playoffs. When asked about his role, Smith replied, "I'm a role player and my role is to lead the way and let my back run through the hole. It's not a statistics position . . . but in the end, if you can't block, you can't play the position."^[4]

Detroit Lions

Smith was an unrestricted free agent after the 2008 season and signed with the Detroit Lions on April 16, 2009.^[5] He was waived on December 17.

Regular season

Playoffs