After losing second-year outside linebacker
The 6-foot-4, 260-pounder played the last two seasons with the Carolina Panthers, totaling 17 tackles, 4.5 sacks and one interception in 12 games. His 2012 campaign was cut short when he went on injured reserve with a left elbow injury on November 14, forcing him to miss the remainder of the year.
Keiser initially signed as an undrafted free agent with the Panthers out of Stanford prior to the 2011 season. Initially a member of the practice squad, he got his chance to suit up midway through the year. He burst onto the scene to have a solid rookie year, finishing second on the team with four sacks. Two of them came in just his second NFL game against the Detroit Lions and Matthew Stafford.
Collegiately, the 24-year old played in 38 games at Stanford with 27 starts. He began his career as a defensive end before moving to an outside-linebacker position in a 3-4 defense his final season. Overall, he recorded 109 tackles, 31.5 tackles for loss, 19.5 sacks, three forced fumbles and one fumble recovery while with the Cardinal.