BIOGRAPHY: Full-time starter the past two seasons totaled 63/2/10 as a senior. All-Conference selection after his junior campaign when he posted 71/6/6.
POSITIVES: Versatile defensive back who plays heads-up football. Quick moving in reverse, displays an explosive break to the throw, and shows a burst of straight-line speed. Instinctive, immediately diagnoses the action, and effectively picks up assignments in zone. Displays a good head for the ball and a nice sense of what's happening on the field. Accurately times his pass defenses and always willing to get involved.
NEGATIVES: Possesses poor speed and struggles staying downfield with opponents. Swallowed up by blocks and has tackles broken.
ANALYSIS: Castille has been a productive player in the Alabama defense since his freshman campaign. At his best facing the action, he has a place at the next level in a zone system, yet his lack of speed will always limit him.