Early years

Jackson attended Seminole High School in Seminole, Florida, where he was a three-year letterwinner and spent time at linebacker, fullback, quarterback and punter. Jackson made 150 tackles with 16 for loss, four forced fumbles and four fumbles recovered as a junior in 2000, and 91 tackles as a senior, including 10 sacks. He also rushed for 950 yards with a 5.7-yard average and 13 touchdowns as a fullback. Jackson was a first team all-state selection by the Associated Press as a junior and senior.

Considered a three-star recruit by Rivals.com, Jackson was ranked 57th among outside linebacker prospects in the nation. He chose to attend Maryland over North Carolina State.

College career

“	D'Qwell is his own guy. He's played far and above my expectations. He's a very good player all the time. He's always precise in practice, always sharp.	”
— Maryland coach Ralph Friedgen.

In 2002, Jackson saw action in all 14 games and led all freshmen in tackles with 51, including 38 solo stops. As a sophomore, he started all 13 games at middle linebacker and led the team with 136 tackles (90 solo). He also recorded 7.5 tackles for a loss, 2.5 sacks, two interceptions (one returned for a TD), two pass breakups, 10 QB hurries and one forced fumble. Jackson earned second team All-ACC selection honors that year.

Having established himself as the leader of the Terrapin defense, Jackson started all 11 games in 2004 and led the ACC with 123 tackles. He was named first team All-America by Collegefootballnews.com and second team by Rivals.com, also receiving All-American honorable mention by Pro Football Weekly.

Jackson entered his senior year on the preseason "watch list" for the Bednarik, Lombardi, Nagurski and Lott Awards. He became a three-time All-ACC performer after finishing the season with 137 tackles, 6.5 for loss, four sacks, and two interceptions. Jackson was also named ACC Defensive Player of the Year, joining E. J. Henderson as the only Terps to earn this honor.

Jackson became only the seventh player in school history to record over 400 tackles in a career. His 447 tackles rank fourth on Maryland's all-time record list behind linebackers Eric Wilson (481, 1981-84), E. J. Henderson (473, 1999-2002) and Chuck Faucette (466, 1983-86). He also joined Ratcliff Thomas (1993-95) and Henderson (2000-02) as the only Maryland players to lead the team in tackles three consecutive seasons.

Professional career

2006 NFL Draft

Jackson was the second highest-rated inside linebacker according to SI′s Tony Pauline, but some were scared off by his slow 40-yard dash. Also, at 6 foot and 228 pounds, he was deemed "more suited for a Cover 2 defensive scheme" and considered as a possible weak-side linebacker. The Cleveland Browns selected him 2nd in the second round, 34th overall. He was the seventh linebacker taken in the 2006 NFL Draft.

Pre-draft measurables

Ht	Wt	40-yd dash	10-yd split	20-yd split	20-ss	3-cone	Vert	Broad	BP	Wonderlic
6 ft 0½ in	230 lb	4.78 s	1.65 s	2.74 s	4.36 s	7.05 s	37 in	9 ft 8 in	19 reps	21

Cleveland Browns

Jackson was signed by the Cleveland Browns on July 24, 2006. In his rookie season, he started thirteen games at weakside linebacker and finished third on the team in tackles with 93, including 60 solo and three tackles for a loss. Jackson posted a career-high 16 tackles at Carolina on October 8, 2006, and matched the total vs. Cincinnati on November 26, 2006.

Playing inside linebacker in his third season with the Browns, Jackson led the NFL in tackles.

Jackson's 2009 season was cut short after he was injured in the sixth game of the season against Pittsburgh. Jackson had a team high 57 tackles when he hurt his shoulder. Browns' coach Eric Mangini said of Jackson at the time, “It’s disappointing any time you lose a player for the season, and this is especially true with someone like D’Qwell, who has proven to be an outstanding leader for us both on and off the field.”

Jackson finally returned from injury in 2011 after nearly missing two whole seasons in a row and thrived in the Browns new 4-3 defensive alignment. Where the 3-4 restricted Jackson due to his lack of elite size, the 4-3 gave him more space and room to make a play on the ball-carrier.

On October 26, 2012, Jackson was fined $7,875 for a late hit against the Indianapolis Colts in Week 7.

Jackson was released by the Browns on February 26, 2014.

Indianapolis Colts

Jackson agreed to terms with the Indianapolis Colts on March 6, 2014. He signed a 4-year, $22 million contract, with $11 million guaranteed. He won the AFC Defensive Player of the Week in week 13 of the 2014 season, when he had 12 tackles, 1 pass defended, 1 fumble recovery, and 1 touchdown against the Washington Redskins. On December 23, Jackson was named as an alternate player for the 2014 Pro Bowl.

Jackson caught an interception thrown by Tom Brady in the AFC Championship Game against the New England Patriots; although they would go on to lose the game 45-7, this catch became notorious following the Deflategate incident.

On February 3, 2015, Jackson was arrested for assault after allegedly punching a pizza delivery man in the head in Washington D.C.

Career statistics

Season	Team	Games		Tackles						Interceptions					Fumbles
		GP	GS	Comb	Total	Ast	Sck	SFTY	PDef	Int	Yds	Avg	Lng	TDs	FF	FR	Yds	TDs
2006	Cleveland Browns	13	13	93	60	33	0.0	0	0	-	-	0.0	-	-	0	0	0	0
2007	Cleveland Browns	14	13	101	75	26	1.0	0	3	1	1	1.0	1	0	0	1	0	0
2008	Cleveland Browns	16	16	154	95	59	2.0	0	6	3	29	9.7	16	0	0	0	0	0
2009	Cleveland Browns	6	6	59	46	13	0.0	0	2	-	-	0.0	-	-	1	0	0	0
2010	Cleveland Browns	Did not play due to injury
2011	Cleveland Browns	16	16	158†	116	42	3.5	0	3	1	24	24.0	24	0	1	3	1	0
2012	Cleveland Browns	16	16	118	63	55	3.5	0	7	2	31	15.5	27T	1	2	2	0	0
2013	Cleveland Browns	16	16	141	75	66	1.5	0	7	1	0	0.0	0	0	1	1	0	0
2014	Indianapolis Colts	16	16	140†	82	58	4.0	0	1	-	-	0.0	-	-	1	4	35	1
2015	Indianapolis Colts	7	7	79	45	34	0.0	0	0	-	-	0.0	-	-	1	0	0	0
	Total	110	109	1,041	656	385	15.5	0	29	8	85	10.6	27	1	7	11	36	1

^† AFC Leader

[ Source: Wikipedia ]