He started 50 of 59 games ; had 4.5 sacks and three picks ; and averaged just over 60 tackles per season .
Drafted by the Chiefs in the second round , Mitchell had four very productive seasons at middle linebacker .
Mitchell started 50 of 59 games ; had 4.5 sacks and three picks ; and averaged just over 60 tackles per season .
Drafted by the Chiefs in the second round , Mitchell had four very productive seasons at middle linebacker .