Deaderick attended Elizabethtown High School in Elizabethtown, Kentucky. As a junior, he had 95 tackles and 22 sacks, earning all-state honors. As a senior, he missed four games to injury but averaged ten tackles per game and recorded seven sacks on the season. He also led EHS to their first state championship game in 24 years.
College career
Following high school, Deaderick attended the University of Alabama, where he redshirted in his first season in 2005. As a freshman in 2006, Deaderick played in seven games, finishing with two tackles. In 2007, Deaderick appeared in all 13 games and made seven starts, recording 22 tackles and two sacks. As a junior in 2008, he started 14 games at defensive end and finished the season with 36 tackles and four sacks. In 2009, Deaderick was shot in the forearm during a robbery attempt he witnessed the week before the Chick-fil-A Kickoff Game. He wasn't seriously injured in the incident, he would be medically cleared to play later in the week and subsequently play in the 2009 opener. Alabama finished the 2009 season 14-0 beating Texas 37-21 in the 2010 BCS National Championship game. He finished his senior season with 23 tackles and one sack.
Deaderick was drafted by the New England Patriots in the seventh round of the 2010 NFL Draft. He signed a four-year contract on July 9, 2010. As a rookie, Deaderick received his first career start in Week 6 against the Baltimore Ravens, recording his first career sack. He went on to start three of the next four games for the Patriots, but was a healthy inactive for the team's Thanksgiving game in Week 12 against the Detroit Lions. After playing in the next three games as a reserve, Deaderick missed the team's Week 16 game with an injury but was a healthy scratch for the regular season finale. He finished the regular season with 10 tackles and 2.0 sacks in 10 games played. On January 3, 2011, during the Patriots' playoffs bye week, Deaderick was suspended by the team. His suspension was lifted on January 7, 2011. Deaderick played 10 games in the 2011 regular season with 17 tackles and 2 sacks. He also started in Super Bowl XLVI, where the Patriots eventually lost to the New York Giants 21–17. Deaderick played 14 games in the 2012 regular season with 18 tackles, 1 sack, and 2 forced fumbles. He was released by the Patriots on May 13, 2013.
