Made an immediate impact in the defensive line rotation as a rookie... Played in all 16 games in his first season, gathering 25 tackles (10 solo)... Credited with 2.0 sacks (17.0 yards), 2 PBUs and 3 TFLs... Registered his first career sack in his first NFL game at IND (9/7)... Posted a career-high 7 tackles at MIN (11/30).

2008 SEASON: Appeared in all 16 games, finishing the season with 25 tackles (10 solo)... Notched 2.0 sacks, 2 PBUs and 3 TFLs... Made his NFL debut at IND (9/7)... Gathered a career-high 7 tackles at MIN (11/30). GAMES PLAYED-STARTED: 16-0

Four-year letterwinner at the University of Arkansas (2004-07), finishing his career with 186 tackles (110 solo), 17.5 TFLs, 12 PBU, 4.0 sacks, 1 FF and 3 FR... Played in 47 games as a Razorback, starting 34 contests... Earned second-team all-SEC accolades from the Associated Press as a senior... Tallied 76 tackles (41 solo), 6.5 TFLs, 10 PBU, 1.5 sacks and 1 FF... Compiled 67 of his 76 tackles over the final eight games, playing at both defensive end and defensive tackle... Played in all 13 games as a junior, including 5 starts... Racked up 42 tackles (27 solo), 3.5 TFLs, 1.5 sacks, 1 PBU and 1 FR... Suffered a knee injury against Vanderbilt that caused him to miss 1 game... As a sophomore, appeared in all 11 games, including nine starts at DT... Accumulated 37 tackles (20 solo), 5 TFLs, 1.0 sack and led the team with 15 QB Hurries... Started 10 of Arkansas’ 11 games as a freshman, becoming the first true freshman position player to start a season opener since 1982... Credited with 31 tackles (22 solo), 2.5 TFLs and 1 PBU... Became the first Razorback defensive lineman to score a TD since 1997 when he returned a fumble for a score against No. 6 Georgia.

Was named a member of the Associated Press Super Team as a senior at Mills H.S. but spent one year at Hargrave Academy before going to Arkansas... Also played tight end in high school... Son of Calvin and Michelle Harrison... Majored in sociology.

Entered the NFL as a third-round selection (90th overall) by Chicago in the 2008 NFL Draft... Signed a 4-year contract with the Bears (7/1/08). SIGNED through 2011