Mallard played football at Benedictine Military School in Savannah, Ga., where he was a 1996 SuperPrep All-America selection and was named to the Atlanta Journal-Constitution Super Southern 100, Top 50 in Georgia and First-team AAAA All-State honors.
Mallard played in 43 games (7 starts), totaling 74 tackles (50 solo), 18 sacks, five forced fumbles and three passes defensed.
As a senior, Mallard played in 11 games (1 start) posted 20 tackles (12 solo), including five sacks, despite being limited by a knee injury.
As a junior, Mallard was credited with 28 tackles (20 solo), including three sacks, a forced fumble and two passes defensed in 11 games (6 starts).
As a sophomore reserve lineman, Mallard played in 11 games (0 starts) and notched 12 tackles (8 solo), two forced fumbles and four sacks.
In 2005 Mallard spent the season out of football after competing in NFL Europe with the Amsterdam Admirals where he registered 12 tackles, two sacks, two blocked punts and two passes defensed.
[3] Mallard was signed by the Cincinnati Bengals on November 24, 2008 after defensive ends Robert Geathers and Frostee Rucker were placed on injured reserve.