He played college football at Hampton University and signed with the Denver Broncos as an undrafted free agent in 2009.

Baker was also a member of the Miami Dolphins, Hartford Colonials, Washington Redskins, Tampa Bay Buccaneers, and Cincinnati Bengals.

On June 26, 2007, Penn State temporarily expelled all ten involved players from July 1 through the end of the summer semester in mid-August.

[11] Without even playing a game for the Redskins, he was placed on injured reserve due to a quad injury on December 13, 2011.

[12] By the start of 2012 training camp, Baker was fully healed and was expected to compete with Chris Neild for the backup nose tackle position.

[23] On October 17, 2014, Baker was fined $10,000 for dragging down Cardinals quarterback Carson Palmer by the face mask during the Week 6 loss.

[24] Baker's gameplay in the 2015 season surprisingly progressed so much that he beat out new free agent acquisition, Stephen Paea, for the starting left defensive end position.

[33] Baker has been childhood friends with nose tackle Terrance Knighton and Damik Scafe since high school, where the three of them were teammates.

[37] While attending Penn State, Baker was sentenced to two years of probation after pleading guilty two cases of assault on May 16, 2008.