He was selected by the Atlanta Falcons in the seventh round of the 2009 NFL draft.

[1] Falcons re-signed Walker to a one-year, $1.26 million contract on March 13, 2012.

[3] On March 14, 2014, he signed a three-year deal with the Kansas City Chiefs.

[6] On February 7, 2016, Walker was part of the Broncos team that won Super Bowl 50.

This biographical article relating to an American football defensive lineman born in the 1980s is a stub.