5th year senior, not the most talented or athletic DB, several oportunities to crack the line-up only to be passed up by younger guys, has taken a message board beating or two at times. Still out there battling, practicing hard, ready to fill in when needed, waiting to make the most of the opportunities he gets. Castillo has stepped up big time in several games this year with limited playing time. Downed the punt at the goal line to help Iowa beat UNI. Picked a pass against Minnesota last week. Sealed the win versus Sparty with an interception in overtime. Congrats Greg Castillo!!