Robertson (6-foot-1, 310 pounds) is a sixth-year player who joins the Broncos after playing his first five professional seasons with the Jets. New York selected him with the fourth overall pick of the 2003 NFL Draft from the University of Kentucky.
In 77 career regular-season games (75 starts), Robertson has totaled 319 tackles (188 solo), 14.5 sacks (106 yds.), four forced fumbles, two fumble recoveries and two pass breakups. He also has totaled 18 tackles (11 solo) in three career playoff games (3 starts).
Robertson has played every game in four of his five seasons and missed only three games for his career. He saw time on 75.4 percent of the Jets' defensive snaps in 2007, 82.5 percent in 2006 and a career-high 85.8 percent in 2004.
At Kentucky, Robertson played 32 games (31 starts) for his career and received second-team All-Southeastern Conference honors as a junior.
An honorable mention USA Today All-American at Melrose High School in Memphis, Tenn., Robertson was born on Oct. 16, 1981.