The San Diego Chargers officially signed linebacker
Walker spent his first four NFL seasons with the Arizona Cardinals under Chargers Offensive Coordinator Ken Whisenhunt and special teams coordinator Kevin Spencer. He has appeared in 48 games registering 44 tackles. A special teams standout, he served as the unit’s captain in 2012. The 6-0, 244-pounder initially signed as an undrafted free agent out of Kansas State in 2009. In four games this preseason Walker recorded six tackles with one pass defensed.